Water & Wastewater Asia January/February 2024

Water & Wastewater Asia is an expert source of industry information, cementing its position as an indispensable tool for trade professionals in the water and wastewater industry. As the most reliable publication in the region, industry experts turn this premium journal for credible journalism and exclusive insight provided by fellow industry professionals. Water & Wastewater Asia incorporates the official newsletter of the Singapore Water Association (SWA).

Water & Wastewater Asia is an expert source of industry information, cementing its position as an indispensable tool for trade professionals in the water and wastewater industry. As the most reliable publication in the region, industry experts turn this premium journal for credible journalism and exclusive insight provided by fellow industry professionals. Water & Wastewater Asia incorporates the official newsletter of the Singapore Water Association (SWA).


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JANUARY / FEBRUARY <strong>2024</strong><br />

www.waterwastewaterasia.com<br />

Puraffinity plans to provide<br />

PFAS-free water to 1 billion<br />

people by 2030<br />

“The water industry brings<br />

humanity through the ongoing<br />

climate crisis”<br />

Flow measurement of treated<br />

water for a drinking water<br />

supply system

Make waves<br />

with us<br />

today.<br />

WWA: A reservoir of<br />

water leaders' insights,<br />

latest products and<br />

news in the sector.<br />

@waterwastewaterasia<br />

Scan to subscribe to<br />

WWA’s e-Newsletter<br />

For more information, please visit<br />



04 Editor’s note<br />

05 News<br />

50 SWA newsletter<br />

63 What’s next?<br />

64 Advertisers’ index<br />



12 Navigating the water innovation<br />

wave: Startups Hydroleap and<br />

SpaceAge Labs ride high with<br />

seed funding<br />

13 Proaspect IIoT sensor product<br />

solutions<br />

14 Redefining cleantech: The need<br />

for onsite contamination testing<br />

in advancing environmental<br />

safety and sustainability<br />


WITH<br />

17 “Future crises will most<br />

probably become water crises”<br />

15<br />

20 Puraffinity plans to provide<br />

PFAS-free water to 1 billion<br />

people by 2030<br />

22 “Prioritise adaptive solutions to<br />

ensure water security”<br />

24 “The water industry brings<br />

humanity through the ongoing<br />

climate crisis”<br />


26 HOYA Electronics recycles more<br />

than 75% of used water with<br />

PUB <strong>Water</strong> Efficiency Fund<br />

27 Reliable chemical analysers<br />

reduce maintenance<br />

28 Digital twins for water utilities<br />

validate economic feasibility by<br />

levelling system operations and<br />

improving decision-making<br />

30 Aerzen’s quantaer fine<br />

bubble aeration system saves<br />

resources<br />

32 The challenges of water<br />

management in South East <strong>Asia</strong><br />

22<br />

2 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


FOCUS<br />

34 Energy efficient opportunities for<br />

wastewater treatment<br />

37 Flow measurement of treated<br />

water for a drinking water supply<br />

system<br />

39 Instrumentation confidence<br />

underpins power station<br />

performance<br />

41 Mine water treatment relies on<br />

borehole loggers<br />

43 Materials can impact product<br />

design life and produce safer<br />

drinking water<br />


45 Transforming waste into wealth:<br />

Altent Renewables solution to<br />

water-rich sludge<br />

32<br />

48 Sullage water treatment using<br />

CDS technology in Malaysia<br />


55 New KSB submersible pumps<br />

in discharge tube for a range of<br />

applications<br />

56 Sumitomo speed reducer:<br />

Cyclo 6000<br />

57 New SO-3 screw compressor<br />

from BOGE<br />

58 Transmitter for precise drinking<br />

water flow measurements<br />

59 ANDRITZ C-press screw press:<br />

The operator-friendly technology<br />

for dewatering<br />

60 Danfoss DST P10B CANopen<br />

pressure transmitter for<br />

sensor-level connectivity<br />

40<br />

61 GWS ASME series: Heavy duty<br />

pressure vessels<br />

61 Emerson launches compact<br />

valve position indicator for quick<br />

commissioning<br />


62 SEA 2023 highlights growing<br />

regional efforts for a green<br />

future<br />

59<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 3


Our bodies of water<br />

Often, the repercussions of the<br />

water crisis are external: ocean<br />

pollution, decline in sanitation, along<br />

with increasing droughts and floods<br />

globally. But this perspective is<br />

surface level; the tip of the iceberg.<br />

This issue’s theme of health and<br />

water quality management delves<br />

into how the water crisis impacts the<br />

internal: our human body. We are,<br />

after all, about 60% water.<br />

In this first issue of <strong>2024</strong>, <strong>Water</strong> &<br />

<strong>Wastewater</strong> <strong>Asia</strong> uncovers how<br />

the industry enhances water<br />

safety, spots early detection of<br />

contaminants in water and innovates<br />

to produce purified drinking water.<br />

For instance, ‘forever chemical’<br />

contaminants: pathogens and<br />

per- and polyfluorinated substances<br />

(PFAS) continue to threaten our<br />

health. According to water treatment<br />

company Puraffinity CEO Henrik<br />

Hagemann, “current technologies<br />

were not designed to capture PFAS,<br />

especially not at the levels the US<br />

and some European countries are<br />

suggesting” (p. 21). Flip to page 20<br />

to find out how his company plans to<br />

provide PFAS-free water to 1 billion<br />

people by 2030 – an ambitious goal<br />

he deemed necessary for both<br />

nature and human health.<br />

As the demand for drinking water<br />

increases with a growing global<br />

population, distributing water<br />

poses a large-scale challenge for<br />

governments. In Australia, to supply<br />

more than 40 million litres of drinking<br />

water every day, KHRONE flowmeter<br />

allowed a water utilities provider<br />

to complete the changeover of<br />

flowmeters within 8hrs, ensuring<br />

the water supply to the city was not<br />

compromised (p. 37). Wilo Group<br />

president and CEO Oliver Hermes<br />

predicts that future humanitarian<br />

crises will become water crises as<br />

this vital resource is not distributed<br />

equally, but he plans to mitigate<br />

water scarcity by expanding Wilo<br />

product portfolio in all steps of the<br />

water cycle. Read all about his water<br />

strategies on page 17.<br />

To drive innovation, water<br />

companies such as NIVUS are<br />

enhancing their measurement<br />

system for precise measuring and<br />

monitoring of drinking water flows.<br />

Experts also shared that a simple<br />

change in material of valve seats<br />

produce safer drinking water, as<br />

seen in Mueller’s decision to move<br />

from nitrile (Buna-N) to Ethylene<br />

Propylene Diene Monomer (EPDM)<br />

(p. 43). In the long run, such<br />

enhancement in water technologies<br />

has profound impact to our health.<br />

As Ashley Ng, director of decision<br />

intelligence solutions for emerging<br />

markets at Xylem, puts it, “the<br />

water industry brings humanity<br />

through the ongoing climate crisis”<br />

(p. 24). It is up to us. Recognising<br />

this interconnectedness is a fresh<br />

perspective to kickstart <strong>2024</strong>. Like<br />

the earth, we are all mostly bodies of<br />

water.<br />

Amira Yunos<br />

Amira Yunos<br />

Assistant Editor<br />


William Pang • Publisher<br />

williampang@pabloasia.com<br />

Amira Yunos • Assistant Editor<br />

amira@pabloasia.com<br />

Pang YanJun • Business Development Manager<br />

yanjun@pabloasia.com<br />

Goh Meng Yong • Graphic Designer<br />

mengyong@pabloasia.com<br />

Shu Ai Ling • Circulation Manager<br />

circulation@pabloasia.com<br />


Ellen Gao • General Manager<br />

pablobeijing@163.com<br />


Daisy Wang • Editor<br />

pabloshanghai@163.net<br />

Published by<br />



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4 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> 2023 <strong>2024</strong>

NEWS<br />

Endress+Hauser new CEO and<br />

president of the supervisory board<br />

Endress+Hauser has completed<br />

the change at the top of the group:<br />

Dr Peter Selders has taken over<br />

as CEO of the Swiss specialist<br />

for measurement technology and<br />

automation solutions. The 54-year-old<br />

holds a doctorate in physics, has been<br />

with the company since 2004 and<br />

was previously managing director of<br />

the competence centre for level and<br />

pressure measurement technology<br />

based in Maulburg, Germany. He is<br />

only the fourth CEO in the group’s<br />

70-year history.<br />

His predecessor Matthias Altendorf<br />

is moving to the supervisory board<br />

after 10 years at the helm. In 2014,<br />

he became the first non-family CEO<br />

to succeed Dr Klaus Endress. He is<br />

now replacing the 75-year-old as<br />

president of the supervisory board.<br />

In future, two members of the third<br />

generation will represent the interests<br />

of the shareholder family. In addition<br />

to Sandra Genge, Steven Endress, a<br />

grandson of the company founder,<br />

joined the board on 1 Jan <strong>2024</strong>.<br />

Peter Selders has been succeeded at<br />

Endress+Hauser Level+Pressure by<br />

Dr Dirk Mörmann, who was previously<br />

head of technology and a member of<br />

the management board.<br />

From left: Dr Peter Selders takes over as Endress+Hauser CEO,<br />

Matthias Altendorf as new president of the supervisory board<br />

(Image: Endress+Hauser)<br />

SIWW<strong>2024</strong> pre-registration is now open<br />

The 10th Singapore International<br />

<strong>Water</strong> Week (SIWW) will be held from<br />

18-22 Jun <strong>2024</strong> at the Sands Expo and<br />

Convention Centre.<br />

As one of the world’s premier platforms<br />

for innovative urban water, coastal and<br />

flood solutions, SIWW<strong>2024</strong> will play<br />

host to global leaders, experts and<br />

practitioners from governments, cities,<br />

utilities, academia and industry to share<br />

best practices and solutions, showcase<br />

the latest innovations and technologies,<br />

and harness business opportunities<br />

to solve urban water and climate<br />

challenges.<br />

(Image: SIWW)<br />

Themes presented will include climate<br />

mitigation and water sustainability,<br />

resource circularity, climate adaptation,<br />

and digitalisation. SIWW is part of the<br />

strategic programme of the Singapore<br />

Government to grow the water industry<br />

and develop water technologies.<br />

Pre-register now for a 10% discount<br />

off standard registration fees.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 5

NEWS<br />

Aurecon expands environmental expertise in <strong>Asia</strong><br />

with acquisition of Singapore consultancy<br />

International design, engineering<br />

and advisory company Aurecon has<br />

acquired Singapore Environmental<br />

Consultancy and Solutions (SECS),<br />

which is a member of the Aurecon<br />

group since 15 Nov 2023.<br />

This acquisition reinforces Aurecon’s<br />

commitment to expanding its<br />

environmental and sustainability<br />

capabilities in <strong>Asia</strong>. SECS brings<br />

expertise in environmental<br />

consultancy, amplifying Aurecon<br />

portfolio and presence in this<br />

domain, which it has been<br />

strengthening over the last three<br />

years in <strong>Asia</strong>.<br />

The acquisition of SECS follows<br />

Aurecon’s previous investments in<br />

the environmental and sustainability<br />

sector. In August 2021, Aurecon<br />

acquired Aurecon Lestari, a<br />

multi-disciplinary environmental<br />

consultancy based in Malaysia.<br />

Subsequently, on 1 Jun 2022,<br />

it expanded its reach with the<br />

acquisition of Acuity & Acumen, an<br />

environmental consultancy based<br />

in Hong Kong. In December 2022,<br />

Aurecon added AEC, one of Hong<br />

Kong’s independent ecological<br />

consultancies, to its portfolio.<br />

2030. Singapore is an ideal setting<br />

for Aurecon’s environmental<br />

dedication, as seen through<br />

initiatives like the Singapore Green<br />

Plan 2030. Furthermore, climate<br />

change concerns are pressing in<br />

<strong>Asia</strong>-Pacific, with a report from the<br />

<strong>Asia</strong>n Development Bank (ADB)<br />

warning of potential GDP losses of<br />

up to 24% in developing <strong>Asia</strong> and<br />

30% in South East <strong>Asia</strong> by 2100<br />

under high emissions scenarios.<br />

However, <strong>Asia</strong>-Pacific has<br />

60-69% of CEOs committing<br />

to net zero or carbon-neutral<br />

targets, outperforming their<br />

global counterparts by 9-13%,<br />

according to professional<br />

services network PwC report.<br />

This commitment to sustainability<br />

and innovation promises $324bn<br />

in economic output and 1.5 million<br />

jobs in the region over the next<br />

two decades.<br />


Launched in <strong>February</strong> 2021, the<br />

Singapore Green Plan 2030 is<br />

a national initiative that aims to<br />

mobilise all sectors of society toward<br />

advancing sustainable development<br />

in Singapore. Spearheaded by five<br />

key ministries and supported by<br />

the government, the Green Plan<br />

outlines concrete objectives for<br />

the remainder of this decade. It<br />

encompasses five fundamental<br />

pillars, each with its focus: city in<br />

nature, energy reset, sustainable<br />

living, green economy, and resilient<br />

future. This acquisition aligns with<br />

Singapore’s vision.<br />

Koh Lay Kuan, operations director<br />

of SECS, said, “This integration<br />

offers [an] opportunity to elevate<br />

our environmental and sustainability<br />

services in collaboration with a<br />

leader in engineering, design, and<br />

advisory solutions.”<br />

Aurecon acquisition<br />

of SECS expands<br />

its environmental<br />

and sustainability<br />

capabilities in <strong>Asia</strong><br />

(Image: Aurecon)<br />

Aurecon CEO William Cox said, “This<br />

initiative stands as a testament<br />

to our blueprint to 2025, the pillar<br />

dedicated to growth in <strong>Asia</strong>’s<br />

environmental and sustainability<br />

sector, where we target to achieve<br />

a growth rate exceeding 25% by<br />

2025.”<br />

Recognising <strong>Asia</strong>’s role in its<br />

portfolio, Aurecon’s commitment to<br />

environmental initiatives aligns with<br />

the region’s long-term projections<br />

of nearly US$26tn in investment by<br />

6 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

NEWS<br />

Ecolab expands regional<br />

coverage in Vietnam by opening<br />

a new manufacturing plant<br />

Ecolab, a global sustainability group<br />

offering water, hygiene, and infection<br />

prevention solutions and services,<br />

continues its expansion to meet<br />

the growing market and increasing<br />

customer demand. It has opened its<br />

new manufacturing plant in Ho Nai<br />

industrial park, near Ho Chi Minh city,<br />

Vietnam. This new facility serves to<br />

demonstrate Ecolab’s commitment<br />

to supporting customers, innovation,<br />

and sustainability in Vietnam and<br />

throughout South East <strong>Asia</strong>.<br />

The new plant has 3,000m 2 of space<br />

with a laboratory, manufacturing<br />

facility and warehouse. The new facility<br />

will also provide additional local job<br />

opportunities, bringing the company’s<br />

workforce in Vietnam to more than 100<br />

people. Ecolab supports customers in<br />

multiple industrial markets, including<br />

food service, lodging, healthcare,<br />

building facilities, F&B processing,<br />

manufacturing, transportation,<br />

pulp and paper, microelectronics,<br />

petrochemicals, and power generation.<br />

Greg Lukasik, senior vice-president<br />

and market head for South East <strong>Asia</strong>,<br />

Ecolab said, “This space will serve as a<br />

hub of science, expertise, and support<br />

From left: Grace Goh, director for supply chain, South East <strong>Asia</strong>; Greg<br />

Lukasik, senior vice-president and market head, South East <strong>Asia</strong>;<br />

Chandrasegeran Marimuthu, vice-president and country manager<br />

for Vietnam; consul general Susan Burns, US embassy and Vietnam<br />

consulate; Sam De Boo, executive vice-president and president, global<br />

markets; and Gregory Harris, principal commercial officer, US embassy<br />

and Vietnam consulate (Image: Ecolab)<br />

activities from the Ecolab team to<br />

serve both our customers, as well as<br />

the local community. With the opening<br />

of the new plant, we are creating<br />

new opportunities for customer<br />

partnerships, while supporting the<br />

development and growth of Vietnam’s<br />

thriving economy.”<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 7

NEWS<br />

LANXESS reshuffles<br />

management positions in<br />

four business units<br />

Specialty chemicals company<br />

LANXESS is reshuffling the<br />

management positions in four of<br />

its 10 business units to provide<br />

additional impetus for its business<br />

in the consumer protection segment<br />

and benefit from the experience of its<br />

proven managers.<br />

These five personnel changes<br />

will take effect on 1 Feb <strong>2024</strong>.<br />

Michael Schäfer, currently head of<br />

the material protection products<br />

business unit, will take over as head<br />

of the Saltigo business unit. From<br />

the liquid purification technologies<br />

business unit, the current head<br />

Bettina Blottko will take over as<br />

head of the material protection<br />

products business unit. The country<br />

representative for the greater China<br />

region, Michael Rockel, will take<br />

over the management of the liquid<br />

purification technologies business<br />

unit in addition to his current role.<br />

Finally, current head of the Saltigo<br />

business unit Michael Zobel will take<br />

over as head of the flavours and<br />

fragrances business unit. On the<br />

other hand, the current head of the<br />

flavours and fragrances business<br />

unit Holger Hüppeler, will take<br />

over as head of the group function<br />

procurement and logistics.<br />

“In addition to savings and<br />

structural improvements through<br />

our ‘FORWARD!’ action plan, this<br />

also includes personnel changes,”<br />

LANXESS CEO Matthias Zachert said,<br />

“We want to strengthen our consumer<br />

protection segment, which we have<br />

established in recent years.”<br />

(Image: LANXESS)<br />

US water utilities deploy PFAS treatment technologies to<br />

safeguard drinking water for communities<br />

As US and European lawmakers<br />

tighten restrictions on per- and<br />

polyfluoroalkyl substances<br />

(PFAS) contaminants in water —<br />

Xylem is working with municipal<br />

and industrial customers<br />

to address this challenge,<br />

reportedly with more than 80<br />

PFAS mitigation installations in<br />

the US.<br />

For example, Stratmoor Hills<br />

<strong>Water</strong> District (SHWD) — which<br />

oversees a combination of<br />

surface and groundwater sources<br />

in the foothills of Cheyenne<br />

mountain in southern Colorado<br />

springs — has deployed selective<br />

ion exchange treatment aimed<br />

at countering two of the most<br />

commonly identifiable PFAS<br />

compounds: Perfluorooctanoic<br />

acid (PFOA) and perfluorooctyl<br />

sulfonate (PFOS). Using selective<br />

single-use ion exchange<br />

technology, the utility has<br />

reportedly reduced contaminants<br />

to levels below compliance limits<br />

and mitigated water quality issues<br />

for its customers.<br />

In Maine, the Kennebunkport,<br />

Kennebunkport and Wells<br />

<strong>Water</strong> District (KKWWD) took<br />

a proactive approach when<br />

it detected PFAS in one of its<br />

system’s supply wells. KKWWD<br />

worked with Xylem to deploy a<br />

granular activated carbon system<br />

that has treated more than<br />

200 million gallons of water to<br />

meet the utility’s drinking water<br />

treatment goals.<br />

Elsewhere in California, the<br />

Orange County <strong>Water</strong> District<br />

(OCWD) deployed over 30<br />

liquid-phase media adsorption<br />

vessel systems to treat for<br />

PFAS, following a change in<br />

California law in 2020. The<br />

vessels were connected to<br />

existing drinking water wells<br />

to allow individual water<br />

districts to continue delivering<br />

drinking water in compliance<br />

for its more than 2.5 million<br />

customers.<br />

“The experience of these early<br />

adopters demonstrates that<br />

with the right technology and<br />

expertise, utilities can meet<br />

treatment and compliance<br />

goals cost effectively for their<br />

communities,” said Snehal<br />

Desai, senior vice-president,<br />

chief growth and innovation<br />

officer at Xylem.<br />

8 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

NEWS<br />

Bruntons Propellers as Thordon Bearings’<br />

authorised distributor in the UK and Ireland<br />

Bruntons Propellers’ facility<br />

in Clacton-on-Sea, UK<br />

(Image: Thordon Bearings)<br />

<strong>Water</strong>-lubricated and grease-free<br />

seals and bearings group Thordon<br />

Bearings has appointed Bruntons<br />

Propellers as its new distributor for<br />

the UK and Ireland region, from 1 Jan<br />

<strong>2024</strong>. The propeller manufacturer will<br />

market, supply and service Thordon’s<br />

entire marine portfolio of propeller<br />

shaft bearings and seals. There is also<br />

provision for Bruntons to promote and<br />

service Thordon products in other<br />

market segments.<br />

Neil McDonald, Thordon Bearings<br />

regional manager, northern Europe<br />

and Africa, said, “In this important<br />

geographical market, Bruntons is [an]<br />

established brand, with a heritage<br />

spanning more than 100 years. The<br />

company, part of the Langham group,<br />

which includes Stone Marine and<br />

Tridan Engineering, also has the<br />

capability to machine and service<br />

bearings and seals on site.”<br />

With a unique arrangement<br />

among Thordon’s global network<br />

of authorised distributors, it is<br />

anticipated that Bruntons will<br />

provide greater exposure across<br />

a number of market sectors in the<br />

UK and Ireland, leveraging Thordon<br />

products with major system<br />

integrators, systems suppliers, ship<br />

owners and shipyards.<br />

Bruntons’ director, Jonathan<br />

Shaw, added, “The merchant<br />

maritime and defence sectors<br />

will be the main focus areas,<br />

but the agreement allows us to<br />

diversify into new industrial and<br />

pump markets.” He plans to offer<br />

a range of professional sales and<br />

engineering services, with the<br />

Thordon inventory in place soon for<br />

quick turnaround delivery.<br />

While the UK defence sector has<br />

for decades been a proponent of<br />

water-lubricated bearings and seals<br />

due to their low noise and vibration<br />

signature, Thordon Bearings is<br />

seeing more and more UK-flagged<br />

merchant vessels look to the<br />

technology to meet existing and<br />

future environmental regulations.<br />

“We hope to announce the first<br />

order under this new agreement<br />

in coming weeks,” said McDonald.<br />

“There are opportunities with new<br />

and existing customers throughout<br />

the region, since Bruntons can now<br />

offer complete propeller shaft lines<br />

with a Thordon seal and bearing<br />

package.”<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 9

NEWS<br />

Rivers are Life unveils inaugural ‘state of<br />

rivers around the world’ survey results<br />

Collective voice for global river<br />

ecosystems Rivers are Life<br />

has revealed the multinational,<br />

multicultural, and cross-generational<br />

results of its ‘state of rivers around<br />

the world’ survey conducted by<br />

SAVANTA, a market research<br />

consultancy, from 3-18 Oct 2023.<br />

The global survey gathered insights<br />

from 6,645 people throughout<br />

14 countries and four continents,<br />

including North America, South<br />

America, Europe, and South East<br />

<strong>Asia</strong>.<br />

About 91% of people around the<br />

world believe that climate change<br />

needs to be acted on in <strong>2024</strong>, and 9<br />

in 10 report that rivers are important<br />

to climate change mitigation.<br />

Moreover, 80% globally agree that<br />

rivers have an impact on their lives.<br />

“What is most shocking about this<br />

data is that more than 90% of the<br />

world agrees on: climate change<br />

needs to be addressed, and rivers<br />

play a vital role in mitigating those<br />

issues,” said Katie Horning, BeAlive,<br />

head of Rivers are Life. “Despite<br />

that alignment, there are still gaps<br />

in knowledge about rivers, and how<br />

people can take action to make a<br />

difference.”<br />

1<br />

2<br />

1 These results<br />

show that,<br />

despite regional<br />

and cultural<br />

differences,<br />

people globally<br />

agree that<br />

climate health<br />

and rivers are<br />

inseparable<br />

2 Despite 81%<br />

of people<br />

considering<br />

rivers to be a<br />

vital part of the<br />

food system and<br />

94% agreeing<br />

that rivers are<br />

important to<br />

agriculture, the<br />

majority would<br />

not eat a fish out<br />

of their local river<br />

3 98% would like to<br />

know more about<br />

environmental<br />

issues<br />


Across findings, respondents<br />

agreed that there is a need for<br />

greater education around the<br />

environment, river systems and how<br />

they can help.<br />

Additionally, 74% of participants<br />

believe more public awareness will<br />

improve the health of rivers, and<br />

63% say lack of attention to the<br />

issue is a major obstacle to reducing<br />

water pollution.<br />

3<br />

10 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

NEWS<br />

“Education is a component to<br />

addressing issues like river pollution,<br />

and we at Louisiana State University<br />

(LSU) contribute both academic<br />

expertise and on-the-ground support<br />

to Rivers are Life,” said Clint Willson,<br />

interim dean of LSU college of the<br />

coast and environment and director<br />

of the LSU centre for river studies.<br />

The centre is an academic partner to<br />

Rivers are Life. “LSU commitment to<br />

this research signifies educating and<br />

encouraging younger generations<br />

globally to advocate for the vitality of<br />

waterways.”<br />

Around the world, and across<br />

generations, there are a few key<br />

differentiators about what individuals<br />

want to learn and how they take<br />

action. It is reported that 69% of<br />

people in South America and <strong>Asia</strong><br />

are twice as likely to be interested<br />

in learning about environmental<br />

issues facing rivers than those in<br />

North America and Europe, which<br />

encompassed 30%.<br />



While most survey respondents agree<br />

that some action is required, the<br />

findings show differing responses<br />

when it comes to how this problem<br />

is addressed: with 76% believing<br />

that human behaviour is the biggest<br />

obstacle to reducing water pollution;<br />

and only 10% of participants strongly<br />

agreeing that their countries’ leaders<br />

care about the health of rivers.<br />

About 59% of people are<br />

planning to take action to help<br />

clean their rivers in <strong>2024</strong>, they<br />

just need help getting started.<br />

Images: Rivers are Life<br />

4<br />

5<br />

4 Limiting pollution<br />

in rivers is a<br />

higher concern<br />

for people in<br />

South America<br />

and <strong>Asia</strong> when<br />

compared to<br />

North America<br />

and Europe<br />

5 Despite these<br />

concerns,<br />

respondents<br />

shared a sense<br />

of hopefulness<br />

and willingness<br />

to help<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 11


Navigating the water<br />

innovation wave: Startups<br />

Hydroleap and SpaceAge Labs<br />

ride high with seed funding<br />

1 2<br />

1 SpaceAge<br />

Labs founders<br />

(Image:<br />

SpaceAge Labs)<br />

2 From left:<br />

Dr Lakshmi<br />

Jothinathan,<br />

head of R&D,<br />

Hydroleap, and<br />

Dr Mohammad<br />

Sherafatmand,<br />

CEO and founder,<br />

Hydroleap<br />

(Image:<br />

Hydroleap)<br />

Singapore <strong>Water</strong> Exchange<br />

(SgWX) — a water technology,<br />

innovation and entrepreneurship<br />

ecosystem launched in 2018 to<br />

support the commercialisation of<br />

water technologies in the industry<br />

— is proving to be fertile ground<br />

for budding water tech startups.<br />

Recently, two resident companies,<br />

Hydroleap and SpaceAge Labs,<br />

secured funding rounds, highlighting<br />

the growing investor appetite for<br />

solutions in the water sector.<br />



Founded in 2016, Hydroleap is<br />

carving a niche with its chemical-free,<br />

electrochemical technology for<br />

industrial wastewater treatment.<br />

This eco-friendly approach has<br />

garnered interest from cooling<br />

towers, food processing companies,<br />

and palm oil industries across<br />

South East <strong>Asia</strong>.<br />

Their partnership for a pilot<br />

project on seawater desalination<br />

pretreatment with PUB, Singapore’s<br />

National <strong>Water</strong> Agency, is a<br />

testament to their technology’s<br />

potential. This project, aiming<br />

to eliminate chemical usage,<br />

reduce sludge volume and energy<br />

consumption, offers validation and<br />

track record for Hydroleap.<br />

Their recent Series A funding of<br />

US$4.4m, led by Japanese venture<br />

capital firm Real Tech Holdings,<br />

reflects investor confidence in<br />

Hydroleap’s technology. Other<br />

corporate investors in this Series<br />

A round include Seeds Capital, an<br />

investment arm of EnterpriseSG;<br />

Mitsubishi Electric; Wavemaker<br />

Partners; New Keynes Investments<br />

and the state government of Victoria,<br />

Australia. With this boost, Hydroleap<br />

is poised to expand into new markets<br />

in Australia, Japan and Indonesia<br />

over the next two years, and across<br />

data centres, F&B, manufacturing<br />

and mining industries. This allows<br />

Hydroleap to solidify its position<br />

as a leader in sustainable water<br />

treatment.<br />




Leveraging the power of low-power,<br />

long-range wireless Internet of<br />

Things (IoT) devices to collect asset<br />

data, which is then processed with<br />

artificial intelligence (AI) software to<br />

generate insights, SpaceAge Labs<br />

helps companies optimise distributed<br />

water asset management. Their<br />

12 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


solutions provide real-time data<br />

on assets like sewers, water pipes,<br />

meters and decentralised water<br />

treatment skids. SpaceAge Labs has<br />

branched out from the water sector<br />

into adjacencies, using precise<br />

GPS location data and advanced<br />

geospatial analysis technology to<br />

improve work efficiency for grass<br />

cutting and snow clearing.<br />

SpaceAge Labs’ dedication to<br />

collaboration has been instrumental<br />

in their success. Pilot projects<br />

with industry giants like Xylem and<br />

Evoqua; now part of Xylem, coupled<br />

with partnerships with industry and<br />

PUB on various projects related to<br />

sewer networking management,<br />

sewer analytics, illegal discharge<br />

detection sensors and geofencing<br />

applications, have provided industry<br />

validation. These projects have<br />

also paved the way for further<br />

expansion in the UK, US, and<br />

Australia. Their recent Series A<br />

funding from US industrial water<br />

solutions provider Gradiant further<br />

strengthens their position in the<br />

global water tech landscape.<br />



The success of both Hydroleap<br />

and SpaceAge Labs highlights<br />

the role SgWX plays in nurturing<br />

water innovation. PUB’s<br />

commercialisation framework<br />

provides critical piloting<br />

opportunities for startups, while<br />

collaborations with EnterpriseSG<br />

and Imagine H2O accelerator<br />

programme accelerate their<br />

growth.<br />

Moreover, PUB’s commitment to<br />

investor engagement, including<br />

planned industry sharing sessions<br />

and the upcoming dedicated<br />

water-focused investor event,<br />

showcases its dedication to connecting<br />

startups with potential investors, with a<br />

‘<strong>Water</strong> Investors Series’ scheduled for<br />

mid-<strong>2024</strong>.<br />



Hydroleap and SpaceAge Labs’ stories<br />

serve as an inspiration for aspiring<br />

water tech entrepreneurs. Their<br />

journey demonstrates the potential<br />

for innovation and the ecosystem<br />

that Singapore offers. As the global<br />

demand for sustainable water<br />

solutions continues to grow, there is<br />

no better time to navigate the wave of<br />

opportunity within this sector.<br />

ProAspect<br />

AID.IOT sensors<br />

<strong>Water</strong> and waste treatment industries focus<br />

on energy and maintenance optimisation<br />

challenges to tackle plant budget and utility<br />

bills. These industries strive to reduce<br />

carbon emission, define circular economy<br />

pathway and sustainability tracking as well<br />

as meet regulatory obligations to quantify<br />

carbon offset and prove net zero.<br />

To improve existing operational energy<br />

efficiency and slash down maintenance<br />

spending with predictive and proactive<br />

strategy, Singapore-based startup firm<br />

— ProAspect aid research — collaborates<br />

with local and international institutes<br />

of higher learning to provide Industrial<br />

Internet of Things (IIoT) sensor product<br />

solutions with web portal deployed at<br />

cloud platforms for condition assessment<br />

of rotating machineries. It sends alert<br />

notification based on impending anomaly<br />

and defect, maximising asset uptime,<br />

lifespan and spare parts replacement cycles<br />

to extend longevity of the machineries<br />

and lower cumulative carbon footprint.<br />

In 2023, ProAspect extensive pilot trials<br />

were completed, in which they predicted<br />

deterioration, operation upset to avoid<br />

catastrophic failure, and expensive repairs.<br />

One of its clients had an operational<br />

deficiency issue. Its compressor system —<br />

driven by variable-frequency drive (VFD)<br />

motor of 6.6 kilovolt (kV), 2,800kW and<br />

2,980 revolutions per min (rpm) at specific<br />

operational state — reportedly failed to<br />

reach design pressures and flow rate.<br />

ProAspect REAP AID device was thus<br />

deployed to assess the motor current<br />

during a complete operational cycle for<br />

2 days to correlate with supervisory<br />

control and data acquisition (SCADA)<br />

process parameter. The identified peculiar<br />

Integrated approach to resolve machinery<br />

fault and energy loss (Image: ProAspect)<br />

issues were crack in rotor bar that caused<br />

mechanical torsional oscillation, excited<br />

torsional resonance mode of compressor<br />

rotor, and motor skid lateral resonance<br />

at specific operational load and speed.<br />

The problem was resolved after extensive<br />

field inspection and design review. Client<br />

eventually repaired the end ring rotor bar<br />

defects and altered the motor mounting skid<br />

design to avoid damage to the gearbox and<br />

compressor system internal components,<br />

extending the longevity of its compressor<br />

system.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 13


Redefining cleantech:<br />

The need for onsite<br />

contamination testing in<br />

advancing environmental<br />

safety and sustainability<br />

proper conditions requires a lot of<br />

water and treatment must be precise,<br />

as overheating can compromise<br />

performance and lead to costly<br />

downtime. The water monitoring<br />

process strategy is key to preventing<br />

system breakdown and shutdowns,<br />

as well as reducing water demand<br />

and energy consumption.<br />

Contamination testing labs are<br />

crucial for safety, detecting<br />

contaminants in sectors such as<br />

F&B, pharmaceuticals, environmental<br />

monitoring and industrial processes.<br />

Adhering to strict regulatory<br />

standards imposed by government<br />

agencies and international bodies,<br />

testing labs play a vital role in<br />

monitoring pollution, upholding<br />

regulations, and promoting<br />

Deploying Aprisium<br />

onsite continuous<br />

contaminant testing<br />

and monitoring<br />

solutions, supported<br />

by real-time online<br />

data and AI-driven<br />

insights, yields<br />

advantages<br />



Monitoring and testing industrial<br />

wastewater discharge in Electric<br />

Vehicles (EV) production, EV battery<br />

manufacturing, recycling, and<br />

mining including mine leachate and<br />

drainage, are essential to mitigate<br />

environmental impacts. These<br />

processes involve contaminants such<br />

as heavy metals like nickel, cobalt,<br />

lithium; solvents; organic matter;<br />

nutrients; toxic substances and acids.<br />

Industrial wastewater must be treated<br />

before it can be discharged into<br />

the environment. Mismanagement<br />

of these pollutants can result in<br />

soil and water contamination,<br />

negatively impacting ecosystems<br />

and human health. Furthermore,<br />

monitoring ensures compliance with<br />

environmental regulations, preventing<br />

potential fines and reputational<br />

damage. Addressing contaminants<br />

allows the EV industry to reduce<br />

their ecological footprint, endorse<br />

sustainable practices, and contribute<br />

to a cleaner future for transportation.<br />

Data centres and cooling towers<br />

rely on efficient cooling systems<br />

for stable operations. Maintaining<br />

responsible industrial practices.<br />

However, the well-established testing<br />

lab industry faces challenges as<br />

the commercial labs are not on site<br />

for continuous detection. A primary<br />

issue is the delay in obtaining<br />

results. Testing labs need samples<br />

to be collected, tagged, and then<br />

transported to offsite facilities for<br />

analysis. In numerous countries,<br />

samples even need to be flown to<br />

another city for testing due to the<br />

complexity and cost of lab setups,<br />

making them unavailable in every<br />

location. This process introduces<br />

14 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


a time lag that can hinder immediate<br />

detection of issues. In situations where<br />

real-time data is crucial for monitoring and<br />

prompt action, this delay poses a problem.<br />

Moreover, the inability to provide real-time<br />

data for monitoring and immediate<br />

action taking further exacerbate the<br />

challenges. Industries — those involved in<br />

manufacturing, environmental monitoring,<br />

or food production — require instantaneous<br />

feedback to address potential contaminants<br />

or deviations from standards swiftly. Without<br />

real-time data, the labs may miss the<br />

opportunity to prevent or mitigate problems<br />

promptly, impacting product quality and<br />

safety.<br />

1<br />

Additionally, the absence of the capability<br />

to support corporates with big data artificial<br />

intelligence (AI) analytics is a noteworthy<br />

limitation. In the era of advanced analytics,<br />

machine learning (ML) and AI — the<br />

ability to process large volumes of data<br />

in real-time is invaluable. Onsite labs with<br />

such capabilities can offer corporations<br />

insights derived from big data analytics,<br />

aiding in trend analysis, predictive<br />

maintenance, and continuous improvement.<br />

Offsite labs may struggle to provide these<br />

advanced analytics services, limiting<br />

their capacity to support corporations in<br />

optimising processes and ensuring<br />

long-term efficiency.<br />

The challenges of testing labs being offsite<br />

include delayed detection, the inability to<br />

provide real-time data for immediate action,<br />

and a lack of support for corporates with<br />

big data AI analytics. These underscore<br />

the importance of advancing testing<br />

capabilities to meet the evolving needs of<br />

industries requiring rapid and data-driven<br />

decision making, and this is where Aprisium<br />

comes in.<br />


Currently, Aprisium offers onsite solutions<br />

that facilitates both autonomous continuous<br />

testing and quick manual batch testing.<br />

The reports are easily accessible online,<br />

and with support for cloud-based data<br />

management and AI-driven insights for<br />

prescriptive and predictive analysis.<br />

With Aprisium solutions, industries are<br />

empowered to consistently monitor areas of<br />

contamination concerns.<br />

Aprisium technology has flexibility for<br />

customisation and versatility in detection<br />

capabilities. Engineered with modularity,<br />

it empowers industries to determine<br />

the number of concurrent detection<br />

channels to deploy on a single device or<br />

platform, enabling the identification of<br />

a spectrum of contaminants in liquids,<br />

semi-solids, and solids. The growing<br />

detection portfolio encompasses heavy<br />

metals, a list of inorganics, volatile<br />

1 Aprisium has started collaborations with major<br />

corporations in the data centre space to develop<br />

coolant management solutions for immersion cooling<br />

2 In water treatment, Aprisium solutions can address<br />

issues like water fouling, where contaminants<br />

accumulate on filtration membranes<br />

organic compounds (VOCs), and water<br />

quality parameters. Recently, Aprisium<br />

has started collaborations with major<br />

corporations in the data centre space to<br />

develop coolant management solutions<br />

for immersion cooling and partnering<br />

leaders in the wastewater treatment and<br />

soil remediation solutioning industries<br />

for per- and polyfluoroalkyl substances<br />

(PFAS) detection. PFAS, known as ‘forever<br />

2<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 15


chemicals’ due to their enduring presence<br />

in the environment, are facing increasing<br />

regulation and bans in many countries<br />

due to their persistent nature. Aprisium<br />

is working on developing cost-effective,<br />

user-friendly, onsite-deployed solutions<br />

for the rapid detection and monitoring of<br />

PFAS. In Aprisium’s product development<br />

timeline, the creation of solutions for<br />

emerging contaminants such as micro- and<br />

nano- plastics, as well as various difficultto-detect<br />

pharmaceutical and industrial<br />

chemicals, are set to commence in late<br />

<strong>2024</strong>.<br />

Aprisium offers assistance to corporations<br />

in ensuring regulatory compliance and<br />

achieving sustainability goals. The most<br />

significant advantage of Aprisium solutions<br />

lies in the capacity to enhance profitability.<br />

This is achieved by implementing triggered<br />

warning systems that measure and<br />

monitor contaminants capable of causing<br />

damage to facilities. For instance, in<br />

water treatment, Aprisium solutions can<br />

address issues like water fouling, where<br />

contaminants accumulate on filtration<br />

membranes, leading to reduced water<br />

flow, increased hydraulic resistance,<br />

higher energy consumption, and potential<br />

damage to the membrane and other<br />

system components. Aprisium solutions<br />

reportedly have a direct impact on both<br />

the top and bottom lines of companies.<br />


Deploying Aprisium onsite continuous<br />

contaminant testing and monitoring<br />

solutions, supported by real-time online data<br />

and AI-driven insights, can be said to yield<br />

advantages for EV production and the mining<br />

industry providing materials for EV batteries.<br />

In the EV manufacturing industry, the<br />

implementation of continuous contaminant<br />

testing serves pivotal roles. Firstly, it<br />

ensures the quality of materials utilised<br />

in EV components — a critical aspect<br />

for preserving the overall performance,<br />

safety, and longevity of electric vehicles.<br />

Additionally, real-time online data support<br />

facilitates efficient production by enabling<br />

manufacturers to swiftly identify and<br />

address contamination issues during<br />

the manufacturing process, minimising<br />

downtime and optimising overall efficiency.<br />

Furthermore, the integration of AI-driven<br />

insights contributes to cost reduction<br />

through the prediction of potential<br />

contaminant-related problems. This<br />

foresight allows for proactive measures,<br />

diminishing the need for reactive<br />

interventions and lowering the expenses<br />

associated with product recalls.<br />

In the EV battery manufacturing industry,<br />

advantages arise from the integration of<br />

onsite contaminant testing and monitoring<br />

solutions. Firstly, the impact of contaminants<br />

on battery materials can be substantial,<br />

influencing performance and lifespan. Onsite<br />

testing plays a crucial role in ensuring the<br />

purity of materials, thereby contributing to<br />

the overall efficiency and durability of EV<br />

batteries. Moreover, continuous monitoring<br />

provides an added layer of safety assurance<br />

by identifying potential hazards associated<br />

with contaminants, ensuring strict adherence<br />

to safety standards throughout battery<br />

production. Additionally, the incorporation<br />

of AI-driven insights proves instrumental<br />

in optimising manufacturing processes.<br />

By identifying patterns and suggesting<br />

improvements, these insights contribute to<br />

enhanced battery performance and more<br />

efficient resource utilisation, fostering<br />

advancements in the EV battery industry.<br />

In the mining industry for EV battery<br />

materials, the integration of onsite<br />

contaminant testing and monitoring<br />

solutions holds advantages. Firstly, these<br />

solutions ensure the extraction of high<br />

quality materials crucial for EV batteries,<br />

thereby contributing to the reliability and<br />

performance of the final product.<br />

Real-time monitoring upholds environmental<br />

compliance, swiftly identifying and<br />

addressing contaminant issues to reduce<br />

the overall environmental impact of mining<br />

activities. Furthermore, the application of<br />

AI-driven insights optimises the mining<br />

supply chain. By predicting potential<br />

disruptions and facilitating efficient resource<br />

allocation, these insights contribute to a<br />

more sustainable and cost-effective mining<br />

operation, fostering responsible practices in<br />

the production of materials for EV batteries.<br />

From 2025, Aprisium will target the EV<br />

industries in both Europe and the US —<br />

using its onsite continuous contaminant<br />

testing solution with real-time online data<br />

support and AI-driven insights — to enhance<br />

product quality, production efficiency, and<br />

overall sustainability. Aprisium ensures that<br />

corporations can meet the high standards<br />

required for the growing electric vehicle<br />

market.<br />

Contamination testing labs are crucial for safety, detecting contaminants in sectors such as F&B,<br />

pharmaceuticals, environmental monitoring and industrial processes<br />

Images: Aprisium<br />

16 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

“Future crises will<br />

most probably become<br />

water crises”<br />


President and CEO of the Wilo Group Oliver Hermes tells us about his<br />

water strategies, the potential of South East <strong>Asia</strong> markets, and the<br />

market outlook in <strong>2024</strong>, after the Group’s first-ever industry conference<br />

for sustainable smart cities in <strong>Asia</strong> and Singapore last September.<br />

By Amira Yunos<br />

on our planet, future crises will most<br />

probably become water crises.<br />

According to the UN world water<br />

report, around 5 billion people will<br />

be at risk of water shortage by<br />

2050 and more than 2 billion people<br />

currently live without adequate<br />

sanitation. With our efficient<br />

product portfolio, we are moving<br />

the vital resource along the entire<br />

water cycle in the most efficient,<br />

intelligent and climate-friendly<br />

manner. Through strategic business<br />

development, investments in R&D<br />

and mergers and acquisitions<br />

(M&A) activities, we are constantly<br />

broadening our expertise in all<br />

steps of the water cycle.<br />

Next comes the megatrend<br />

Speakers at the<br />

Wilo Group industry<br />

conference 2023<br />

(Image: Wilo Group)<br />

What are the most pressing issues<br />

in the water industry? How has Wilo<br />

Group strategised and digitalised<br />

to create differentiated solutions to<br />

meet these needs?<br />

Oliver Hermes: Let me embed<br />

the segments challenges into our<br />

five global megatrends that we<br />

identified to look 20 years ahead<br />

in our corporate strategy, starting<br />

with the most omnipresent one<br />

— climate change. Global CO2<br />

emissions continue to rise, taking<br />

global temperatures with them.<br />

The consequences in form of<br />

water shortages or extreme<br />

weather events are becoming<br />

more noticeable — especially in<br />

the countries in the global south.<br />

This requires smart and adaptable<br />

infrastructure solutions which<br />

leads me directly to the next issue,<br />

the topic of water scarcity. The<br />

uninterrupted supply of water for<br />

drinking, for agriculture, or for the<br />

industry has always been one of<br />

humanity’s challenges. As the vital<br />

resource is not distributed equally<br />

of urbanisation. Already half<br />

the constantly growing global<br />

population currently lives in cities,<br />

and more people are moving from<br />

rural to metropolitan areas. As<br />

cities grow, so does the demand<br />

for and the complexity of water<br />

and energy supply. With our smart<br />

and connected products within our<br />

‘Smart Urban Areas’ approach, we<br />

can contribute to a smart, efficient<br />

infrastructure that even keeps<br />

megacities in the global south<br />

worth living.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 17


Advanced infrastructure enables natural goods<br />

and value streams, business and politics<br />

work together, and sales processes and<br />

procurement follow standardised procedures.<br />

At the same time, high bureaucracy and close<br />

regulation tend to hinder the markets flexibility<br />

and innovation spirit. In terms of human capital,<br />

we lack young workforce, especially in the<br />

craft sector.<br />

Hermes delivering the keynote speech at the Wilo Group industry conference 2023 (Image: Wilo Group)<br />

The ongoing dynamic economic<br />

Underlying all of these is the trend of<br />

development in many parts of the world, digitisation. As the digital pioneer of our<br />

especially in emerging economies, is industry, we see this as an enabler for all<br />

triggering an increasing demand for<br />

these issues. Only if we are willing to adapt<br />

energy. By installing high-efficiency<br />

— to constantly innovate our products<br />

pumps for heating, cooling and air<br />

and business model — we will be able to<br />

conditioning applications, 246 terawatt succeed in the end.<br />

hours (TWh) of energy could be saved<br />

every year. Furthermore, together with What are the similarities and differences<br />

our long-term partner Schneider Electric, between mature and emerging markets,<br />

we have developed a complete solution and what opportunities for growth and<br />

for the generation and storage of surplus investment do you see in South East <strong>Asia</strong>?<br />

renewable energy. Using electrolysis, Hermes: Since the population in the<br />

the H2POWERPLANT converts surplus mature markets are shrinking rather than<br />

energy in green hydrogen, which can growing, and basic needs have been mostly<br />

then be temporarily stored before being saturated — we see that the focus is now<br />

‘reconverted’ into electricity via fuel cells in on the improvement of quality, efficiency, or<br />

a highly automated process when required. connectivity rather than on sheer quantity.<br />

For example, we have been approved by<br />

Last but not least, over the last few years, Thames <strong>Water</strong> to maintain and upgrade<br />

we experienced major geopolitical shifts. some of their pumping stations in and around<br />

Long-term alliances have crumbled,<br />

the city of London, the UK. Thames <strong>Water</strong><br />

causing disruptions in the transaction of are responsible for around 9,000 pumping<br />

goods, money and knowledge. We oppose stations in the south east of UK, taking care<br />

this with our region-for-region approach, of the wastewater transport for the region. By<br />

thus by strengthening regional networks, upgrading these stations, they become more<br />

diversifying supply chains, and fostering reliable, cost-efficient and sustainable for the<br />

new trade corridors.<br />

frequency of extreme weather events.<br />

In the emerging markets, we see a different<br />

picture. What those countries have in<br />

common are volatile market dynamics, fast<br />

growing populations and middle classes, but<br />

also huge inner contradictions in terms of<br />

living standards. As the populations and their<br />

cities grow, so do their claims for functioning<br />

infrastructure as well as opportunities for<br />

consumption and employment. Emerging<br />

markets are often more affected by the<br />

consequences of climate change, sometimes<br />

by floods or droughts. The young population<br />

is eager to work while sometimes being less<br />

qualified. Though the economic potential<br />

might be obvious, different forms of<br />

government, corruptions, trade barriers or<br />

lacking regulations complicate investments.<br />

Both modes take different approaches and<br />

need a socio-economic understanding for the<br />

underlying dynamics. Then, each markets’<br />

challenges can be seen as opportunities.<br />

South East <strong>Asia</strong> is an excellent example for<br />

this. In growing megacities like Kuala Lumpur,<br />

Malaysia or Singapore, millions of people<br />

demand for functioning infrastructure such<br />

as water supply and sanitation at the same<br />

time. With the new capital Nusantara, the<br />

Indonesian government radically invests in the<br />

creation of a greenfield city with a sustainable<br />

and futureproof infrastructure.<br />

How has Wilo Group progressed under your<br />

leadership since 2006?<br />

Hermes: In contrast to my valued<br />

predecessors, I am not an engineer but an<br />

economist, therefore I cannot help but look<br />

beyond the pump and along the entire value<br />

chain. Concretely, I was able to strengthen<br />

Wilo’s innovation leadership by pursuing the<br />

Group’s shift from a component manufacturer<br />

to a provider of systems, solutions and<br />

services.<br />

18 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


Due to the need for sustainable<br />

water solutions, our strong<br />

innovation spirit, our constant aim<br />

for technological leadership and our<br />

strong regional networks all over the<br />

world — we are well-positioned to<br />

future challenges.<br />

Oliver Hermes<br />

President and CEO<br />

smart and sustainable water solutions<br />

with Singapore’s role as an urban living<br />

laboratory to catalyse critical cross-sector<br />

collaborations that can enable smart,<br />

connected and sustainable cities across<br />

the region. This was especially important<br />

as the percentage of people living in<br />

urban cities will increase to 70% by 2050,<br />

alongside an increase in the number of<br />

megacities, which will put a strain on<br />

existing infrastructure as demand for<br />

resources are expected to grow alongside<br />

increasing climate risk.<br />

Another major target of mine has been to<br />

promote the transformation of the Wilo<br />

Group towards becoming a digital climate<br />

protection pioneer of the industry. As a result,<br />

we have been selected as one of the 50<br />

sustainability and climate leaders worldwide<br />

in 2020. Within the strategic realignment of<br />

the Group, I sped up the internationalisation<br />

of the business: I consolidated Wilo’s position<br />

as a leading global player by entering the<br />

markets of east, west and central Africa and<br />

the countries of Latin America, strengthening<br />

the regional presence in South East <strong>Asia</strong> and<br />

the Middle East, and establishing new plants<br />

in Russia, India, China, Korea, Turkey, the UAE<br />

and the US. As a result, the Wilo Group has<br />

grown into a multibillion business in recent<br />

years.<br />

Through the modernisation of brand identity<br />

and development of the corporate group<br />

from a ‘hidden champion’ to a ‘visible and<br />

connected champion’, I was able to increase<br />

our brand performance and visibility. This<br />

might be a result of my strong engagement in<br />

the field of political responsibility, for example<br />

my committee work for German <strong>Asia</strong>-Pacific<br />

Business Association, the German Eastern<br />

Business Association, German Near and<br />

Middle East Association (NUMOV) or most<br />

recently, the German-African Business<br />

Association, as well as the implementation of<br />

government and public affairs as a corporate<br />

function.<br />

What are your hopes for Wilo Group as it<br />

works towards its strategic plans? What is<br />

your market outlook for <strong>2024</strong>?<br />

Hermes: The COVID-19 pandemic and<br />

the Russians’ invasion in the Ukraine<br />

have proven that the Wilo Group can<br />

consolidate and keep up profitable growth<br />

in challenging times. We do not expect<br />

the geopolitical situation to change for<br />

the better anytime soon, nevertheless,<br />

are optimistic that — due to the need for<br />

sustainable water solutions, our strong<br />

innovation spirit, our constant aim for<br />

technological leadership and our strong<br />

regional networks all over the world — we<br />

are well-positioned to future challenges.<br />

With our strategic business development in<br />

the fields of water treatment and hydrogen,<br />

we want to broaden our offer as a solutions<br />

provider in challenging times.<br />

With new capitals in Indonesia and<br />

Uzbekistan, we have some major smart city<br />

projects coming up and want to strengthen<br />

our position as a preferred solution provider<br />

in this field. In terms of market development,<br />

we certainly have a strong focus on the<br />

ASEAN region, with the aim to strengthen<br />

our regional presence with a hub in<br />

Singapore. The same applies for the Middle<br />

East and central <strong>Asia</strong>n region as well as<br />

Sub-Saharan Africa.<br />

What is your take on Wilo Group’s first-ever<br />

industry conference in <strong>Asia</strong> this year? How<br />

has it sparked dialogue about sustainability<br />

and support urbanisation pathways in the<br />

region?<br />

Hermes: We are honoured to have hosted<br />

our first-ever industry conference in<br />

<strong>Asia</strong> and Singapore, one of the world’s<br />

smartest cities, in 2023. Our aim was to<br />

combine our expertise and network in<br />

The conference saw inspiring dialogues<br />

around how digital solutions can help<br />

address some of the megatrends we are<br />

facing, including globalisation, urbanisation,<br />

energy and water shortages, climate<br />

change, and digital transformation. We were<br />

proud to share how our high-efficiency and<br />

smart pumps are an example of such digital<br />

solutions, and exchange insights with<br />

thought leaders across various sectors<br />

including artificial intelligence (AI), green<br />

buildings, spatial planning and more.<br />

We are excited to continue strengthening<br />

our collaborations with these industry<br />

leaders as we shape the future of smart<br />

and sustainable urban areas in <strong>Asia</strong>. It is<br />

an exciting journey, and we are thrilled to<br />

be at the forefront.<br />

Oliver Hermes<br />

President and CEO, Wilo Group<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 19


Puraffinity plans to provide<br />

PFAS-free water to 1 billion<br />

people by 2030<br />

With US$13.9m raised in Series A funding, this water treatment<br />

company which focuses on per- and polyfluoroalkyl substances (PFAS)<br />

aims to eliminate these ‘forever chemical’ contaminants in both<br />

industrial and domestic settings by scaling its technology and<br />

expanding its manufacturing investment, according to<br />

Puraffinity CEO Henrik Hagemann.<br />

By Amira Yunos<br />

three times that of a single use adsorbent.<br />

“The reuse type of material development<br />

innovation unlocks the ability for the company<br />

to scale more readily towards impacting<br />

more people,” Hagemann said. Furthermore,<br />

a quantifiable goal allows Puraffinity to align<br />

its business model design and development<br />

of new features with a social impact. “That is<br />

what moves the needle and that is where we<br />

need to focus,” the CEO added.<br />

Industrial water treatment facilities (Image: Puraffinity)<br />


For Hagemann, providing 1 billion people with<br />

PFAS-free water in a few years’ time means<br />

his company must “think in highly scalable<br />

terms”. “That entails positioning ourselves<br />

as a material component supplier, where we<br />

work with system integrators who combine<br />

pre-treatment with advanced treatment<br />

options like Puratech for PFAS removal,”<br />

he said. “By supplying the adsorbent<br />

components that allow system integrators<br />

to excel, we can fast track our route to end<br />

users without needing to individually deliver<br />

every system for end users.”<br />

The Puraffinity 2030 plan contains several<br />

stages, which include building consortiums<br />

that enable disposal of the captured PFAS<br />

and regeneration of the adsorbent media.<br />

According to the CEO, having a regenerable<br />

media allows the same PFAS targeted<br />

material to address 3-5 cycles of use,<br />

effectively increasing the volume of water<br />

that can be made PFAS-safe by more than<br />



The first focus of its platform is to continue<br />

developing new precision adsorbent<br />

materials in line with the everchanging<br />

and increasingly stringent PFAS regulatory<br />

landscape on a global scale, said the CEO.<br />

Regulations across the world are reportedly<br />

setting new maximum contaminant levels<br />

(MCL) in the range of parts per trillion (ppt),<br />

with the US trying to get to 4ppt for two<br />

of the most common PFAS species. These<br />

levels are increasingly lower, and PFAS are<br />

still dangerous to human health in the range<br />

of ppt. Hagemann pointed out that the health<br />

advisory levels for PFAS have decreased<br />

faster than Moore’s law — the observation<br />

that the number of transistors on computer<br />

chips doubles about every 2 years — in the<br />

last 13 years.<br />

20 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


The reuse type of material<br />

development innovation unlocks the<br />

ability for the company to scale more<br />

readily towards impacting more<br />

people.<br />

Henrik Hagemann<br />

CEO, Puraffinity<br />

tolling partners in the advanced materials<br />

sector to fulfil market demand for the next<br />

two years, with initial sites in the UK and<br />

Germany,” Hagemann said. “COVID-19<br />

reminded how risky relying on a single source<br />

can be, so we are developing a distributed<br />

network of manufacturing partners to<br />

introduce added resilience to our scale up<br />

strategy.”<br />

“We have seen the PFAS regulations go down<br />

37.5 million times in the US alone, a drop of<br />

almost 10 times lower concentration every 2<br />

years,” he said. “While current technologies<br />

tackle common water contaminants and<br />

pollutants such as chlorine residuals and<br />

heavy metals, they were not designed to<br />

capture specific synthetic groups of chemicals<br />

like PFAS, especially not at the levels the US<br />

and some European countries are suggesting.<br />

“That requires a different approach and that<br />

is the core of our technology.”<br />

Puraffinity designs its scalable adsorbent<br />

material to capture and retain the most toxic<br />

‘forever chemicals’: both short branched<br />

and long-chains. A targeted materials allows<br />

broad-spectrum removal performance<br />

with higher throughput and longer lifespan,<br />

according to the CEO. “For industrial<br />

applications, that means being able to<br />

increase the capacity of an existing filtration<br />

bed site without adding more complexity<br />

— sometimes as much as a 500% increase<br />

in flow rates compared to petroleum-based<br />

ion exchange,” Hagemann said. Based on its<br />

third-party validations, the longer lifespan<br />

reduces the frequency of material change out,<br />

which helps Puraffinity in achieving scalability.<br />

In contrast, in domestic settings, a major<br />

nuisance the CEO said is the weekly checks<br />

on point-of-entry PFAS treatment systems<br />

in the basements of homeowners, and then<br />

trolleying the heavy granular activated carbon<br />

(GAC) vessels out of homes monthly. “The<br />

Puratech-powered solution would be three<br />

times smaller than current tanks, and still only<br />

get replaced every 12 months,” he said. “That<br />

is a major homeowner benefit, but also allows<br />

current domestic dealer networks to service<br />

their end users [in a more scalable way].”<br />

To provide assurance for future regulatory<br />

changes, Puraffinity targeted adsorbents<br />

can be reportedly upgraded within the same<br />

adsorbent media beds at both industrial and<br />

domestic settings, allowing its partners to<br />

respond to the fast-changing PFAS regulatory<br />

landscape.<br />

Puraffinity also predicts which one of the<br />

existing 5,000 PFAS species will be included<br />

to these regulatory frameworks, and then<br />

“developing new high-performance materials<br />

to capture and retain those PFAS substances<br />

at even lower levels”. Hagemann said, “It is a<br />

2D race across more PFAS species and lower<br />

PFAS concentrations.”<br />

The second focus is regeneration, which<br />

is part of Puraffinity’s value proposition<br />

to provide sustainable, green solutions<br />

to the market, with low carbon footprint<br />

and reduced impact to the environment,<br />

the CEO said. “We see that angle align<br />

with regeneration as a milestone across<br />

the water treatment industry since the<br />

media can be reused for non-point of use<br />

applications, like industrial or environmental<br />

remediation, enabling a circular economy for<br />

the future of water filtration materials,” he<br />

added. “Regeneration also aligns well with<br />

addressing the issue we keep hearing from<br />

customers: What about the disposal?”<br />



The Series A funding allowed Puraffinity<br />

to scale up its operations, transitioning<br />

from a R&D focused organisation to being<br />

a full commercial entity. “The funds from<br />

our investment round will support our<br />

manufacturing expansion with a network of<br />

The CEO added that Puraffinity also plans<br />

to establish its own manufacturing facility<br />

and grow its team as a subsequent step in<br />

its expansion. “This facility will help us meet<br />

market demand on a global scale,” he said.<br />

“The funds will also support the growth of our<br />

organisational structure, going from 25 to 40<br />

employees by the end of <strong>2024</strong>.”<br />

Lastly, the funds will support its continued<br />

investment in R&D and product development.<br />

“It is a common mistake for scaling deep<br />

tech companies to only invest in the most<br />

progressed product line, which creates<br />

overexposure to the success of that specific<br />

product,” Hagemann said. “This investment<br />

enables us to align with future PFAS market<br />

demands and regulatory needs, while<br />

proactively foreseeing what the regulatory<br />

framework may look like in 2025 and beyond.<br />

“It is a gamble, but one of those gambles<br />

that nature and human health require us to<br />

make.”<br />

Henrik Hagemann<br />

CEO, Puraffinity<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 21


“Prioritise adaptive solutions<br />

to ensure water security”<br />

Nanostone <strong>Water</strong> CCO Jürgen von Hollen gives his leadership insights,<br />

how he aligns his clients’ ESG goals related to water management and<br />

what the ceramic membrane solutions offers in light of increasing global<br />

water stresses.<br />

By Amira Yunos<br />

a value proposition to customers is a<br />

priority to position its technology in<br />

the water filtration market for partners<br />

globally.<br />

The CCO aims to scale application<br />

in the company’s existing regions.<br />

“We will leverage and extend our<br />

regional application engineering<br />

capabilities and the application<br />

references to reach new markets,”<br />

Hollen said. “Educating our partners<br />

and customers through technology<br />

demonstration will be critical to the<br />

success of this strategy.”<br />


As a global manufacturer in ceramic<br />

ultrafiltration membranes, NSW puts<br />

ESG as its core offering strategy.<br />

“Not only does our technology offer<br />

an energy-efficient, high-recovery<br />

solution to our customers, but — from<br />

a manufacturing perspective — we<br />

are also focused on operational<br />

excellence,” Hollen added. “These<br />

An NSW project<br />


With over two decades of experience<br />

in executive roles, Hollen’s previous<br />

experience as vice-president of<br />

advanced filtration technologies at<br />

Pentair catapulted his role as CCO<br />

of Nanostone <strong>Water</strong> (NSW) today.<br />

“Having worked in different industries<br />

allows the opportunity to identify<br />

key enablers for scaling a business<br />

[which] are industry agnostic<br />

and can be applied to the water<br />

filtration industry,” he said. “My time<br />

working at Pentair gave me insights<br />

into developing a new technology<br />

business globally.”<br />

As the CCO of this water filtration<br />

solutions company, his role is said<br />

to encompass sales and marketing<br />

activities in the business. For<br />

Hollen, defining the focus verticals,<br />

applications and regions, where the<br />

NSW ceramic membrane can offer<br />

provide an overall solution that has a<br />

low carbon footprint.”<br />

By prioritising dialogue and<br />

collaboration with its clients to<br />

achieve their ESG goals related to<br />

water treatment and management,<br />

NSW approach “entails discussions,<br />

assessments of its clients’ challenges,<br />

and devises solutions that are aligned<br />

with their objectives”, according to<br />

the CCO. “By fostering a partnership<br />

22 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


1 2<br />

of durable materials, which allows robust<br />

treatment subject in variable conditions<br />

over an extended lifetime, and high-flux<br />

filtration, which provides our membranes<br />

with resilience to harsh conditions present in<br />

challenging waters such as high turbidity and<br />

harmful algae blooms, in a compact footprint.”<br />

1 Its ceramic filter<br />

2 NSW technology<br />

grounded in mutual ESG commitment,<br />

we aim to deliver solutions that are<br />

synergistically aligned with our clients’<br />

sustainability aspirations and operational<br />

requirements,” Hollen said.<br />

In South East <strong>Asia</strong>, NSW has conducted<br />

dozens of pilots with industrial partners,<br />

which have led to over 100 installations,<br />

according to the CCO. “We are working<br />

with Maynilad <strong>Water</strong> in the Philippines to<br />

improve the quality of drinking water in<br />

metro Manila, cultivating relationships in<br />

our focus regions whose water sources<br />

present substantial treatment challenges,”<br />

Hollen said. Another example, he added,<br />

is a NSW partnership with electric power<br />

generation company ACWA Power to<br />

develop a pre-treatment solution for<br />

seawater desalination in the Middle East,<br />

which was piloted at the Barka desalination<br />

plant in Oman.<br />



In light of climate change and increasing<br />

global water stresses, Hollen said that<br />

these impacts are already threatening the<br />

security of water supplies around the world,<br />

whether through increased frequency<br />

of algal blooms in warming climates<br />

or heightened severity of droughts. In<br />

response, authorities in some regions have<br />

been implementing strict requirements<br />

on the quality of discharged wastewater,<br />

mandating zero liquid discharge (ZLD)<br />

and reuse for certain applications in order<br />

to safeguard water resources. “Looking<br />

ahead, we see water scarcity escalating<br />

while resource quality continues to decline,<br />

making treatment all the more challenging,”<br />

the CCO said.<br />

To tackle this, Hollen said that the industry<br />

must continue to innovate and prioritise<br />

adaptive solutions to ensure water security.<br />

At NSW, its ceramic membrane technology<br />

is suited for difficult-to-treat waters across<br />

a range of applications, including seawater<br />

desalination, variable surface waters, and<br />

challenging industrial wastewater. He said,<br />

“We accomplish this through a combination<br />

By fostering<br />

a partnership<br />

grounded in mutual<br />

ESG commitment,<br />

we aim to deliver<br />

solutions that are<br />

synergistically<br />

aligned with<br />

our clients’<br />

sustainability<br />

aspirations and<br />

operational<br />

requirements.<br />

Jürgen von Hollen<br />

CCO, Nanostone <strong>Water</strong><br />

Additionally, the threat of micropollutants and<br />

contaminants of emerging concerns, such as<br />

per- and polyfluoroalkyl substances (PFAS) is<br />

still present. In alignment of its goal to provide<br />

product solutions that commit to protecting<br />

the environment, NSW has complied with<br />

applicable environmental regulations. “We<br />

have conducted in-depth due diligence<br />

on our supply chain and — based on our<br />

production knowledge and declarations<br />

collected from our suppliers — our products<br />

do not contain any intentionally-added PFAS<br />

chemicals,”<br />

Hollen added.<br />

With this enabling technology for water reuse<br />

in both municipal and industrial applications,<br />

NSW plays a role in resilient water supply.<br />

“The robustness of our membrane provides<br />

operational reliability, ensuring quality<br />

water in the face of evolving challenges<br />

presented by climatic shifts,” the CCO said,<br />

“We strive to develop solutions that tackle<br />

today’s concerns [and] are well-positioned to<br />

address these future challenges.”<br />

Images: Nanostone <strong>Water</strong><br />

Jürgen von Hollen<br />

CCO, Nanostone <strong>Water</strong><br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 23


“The water industry<br />

brings humanity through<br />

the ongoing climate crisis”<br />

Ashley Ng, director of decision intelligence solutions for emerging<br />

markets at Xylem, shares insights on the company’s collaboration with<br />

Idrica, harnessing artificial intelligence (AI) in the industry, and the<br />

timeliness of addressing the climate crisis.<br />

By Amira Yunos<br />

Ashley Ng<br />

Director, decision intelligence solutions, emerging markets<br />


Tell us more about Xylem’s<br />

partnership with Idrica.<br />

Ashley Ng: Xylem is partnering<br />

with Idrica, a leader in water data<br />

management and analytics, to create<br />

an integrated platform. The ‘Xylem<br />

Vue powered by GoAigua’ platform<br />

helps utilities maximise every digital<br />

investment in an affordable and<br />

sustainable way by combining Xylem<br />

Vue portfolio of smart connected<br />

devices, analytical applications,<br />

and services, with Idrica’s GoAigua<br />

digital management technology that<br />

has already been implemented in<br />

more than 300 water utilities around<br />

the world. Under this partnership,<br />

Xylem is the global distributor of<br />

Idrica’s solutions.<br />

How have AI and digital optimisation<br />

enhanced performance in<br />

water infrastructure? How does<br />

Xylem intelligence solutions aid<br />

in decision-making and asset<br />

management?<br />

Ng: Some examples of these<br />

positive outcomes include improved<br />

cost efficiency of treatment plant<br />

operations, better utilisation of<br />

existing network infrastructure<br />

and greater efficiencies in existing<br />

work processes amongst others.<br />

These outcomes have been realised<br />

in active operations worldwide.<br />

For example, in Germany, our<br />

plant optimisation solution helped<br />

EWE Wasser save some 1.2<br />

million kWh annually — a 30%<br />

reduction in aeration energy<br />

requirement. In another example,<br />

our holistic network monitoring<br />

solution has helped Air Selangor,<br />

Malaysia’s largest utility, reduce<br />

their non-revenue water (NRW)<br />

by contributing to the early<br />

identification of leaks — two per week<br />

on average. Another outcome was<br />

achieved at South Bend in the US,<br />

where our solutions resulted in more<br />

than 1 billion gallons of reduction in<br />

annual combined sewer overflows<br />

through real-time decision support<br />

for sewer operators, saving the city<br />

over US$400m in capital investments.<br />

These achievements highlight the<br />

power that digital enablement brings<br />

for customers to improve their water<br />

operations.<br />


Tell us what distinguishes GoAigua,<br />

the integrated software and analytics<br />

platform, from its competitors?<br />

Ng: ‘Xylem Vue powered by GoAigua’<br />

is a complete, scalable, and modular<br />

solution covering assets to analytics<br />

across the water cycle. For the<br />

first time, utilities and other water<br />

and wastewater managers and<br />

operators will be able to connect,<br />

analyse, visualise, and manage all<br />

their assets and processes through<br />

a single, integrated platform. Therein<br />

lies its differentiation against our<br />

competitors — it is more than a point<br />

solution solving only a single problem.<br />

Its modular design allows users to<br />

quickly utilise datasets across the<br />

organisation and deploy them to<br />

24 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


additional use cases within our suite<br />

of tools.<br />

Furthermore, with the Idrica<br />

partnership, Xylem has augmented<br />

our offerings with both technical<br />

depth — from asset to analytics<br />

in our core business — and<br />

operational knowledge, through<br />

Global Omnium’s experience and<br />

references.<br />

What are the challenges that AI<br />

poses and how should the water<br />

industry overcome them?<br />

Ng: New developments in generative<br />

AI provide many opportunities to<br />

unlock value in the water industry.<br />

However, there are challenges that<br />

should restrain our optimism on its<br />

utilisation in our industry.<br />

Firstly, we must recognise that<br />

AI, no matter how powerful, is as<br />

good as its training. To that end,<br />

representative data shapes the<br />

effectiveness of AI utilisation in<br />

the water industry. One of the<br />

challenges in the water space is<br />

creating and maintaining these<br />

representative datasets. The best<br />

way to overcome this is to make<br />

curating data part of everyday<br />

workflows and to distribute the<br />

effort to the people on the ground<br />

who are best placed to judge the<br />

veracity of the data. Taking care<br />

of data is much like tending to a<br />

garden — doing it regularly is easier<br />

than trying to fix a patch after it has<br />

become overgrown.<br />

Secondly, recognise the human<br />

element with adoption of AI. The<br />

deployment of AI will face its share<br />

of detractors with varied interests<br />

in resisting its adoption. Anxiety<br />

will also be generated by workers<br />

who fear for their job security. The<br />

solution is a holistic approach to<br />

change management which will<br />

need to include redesigning jobs and<br />

workflows as well as upskilling of the<br />

workforce to adapt to these changes.<br />

These efforts will make or break the<br />

achievement of outcomes with new<br />

technologies and should be made a<br />

priority in the adoption of AI.<br />

Lastly, AI introduces a challenge of<br />

accountability. As with self-driving<br />

cars, the same conundrum is faced<br />

in the water industry — if operations<br />

are turned over to AI algorithms, who<br />

is responsible when things go wrong?<br />

In the water industry, we deal with<br />

life and death issues like water safety<br />

or flood control. Systems must be<br />

designed to ensure accountability<br />

and risk management remain in<br />

place as we explore AI in aiding the<br />

water industry. Retain critical control<br />

decisions in human hands and ensure<br />

that human eyes remain on key<br />

operational parameters even as AI<br />

capabilities are augmented.<br />

What is the best approach to<br />

integrate AI with companies’ existing<br />

solutions in emerging markets?<br />

Ng: The urgency to digitise water<br />

stems from the imperative to<br />

enhance real-time monitoring,<br />

improve efficiency, and build<br />

resilience in water management to<br />

address evolving environmental<br />

challenges and ensure sustainable<br />

access to this essential resource.<br />

In emerging markets, digital maturity<br />

remains the main stumbling block to<br />

adoption of technologies such as AI.<br />

The best approach to adopting such<br />

technologies is to adopt a considered<br />

approach to the endeavour. Start<br />

by laying out the strategy: First<br />

understand the drivers for the<br />

change and the outcomes to be<br />

achieved. Next, focus on building<br />

the right team to drive this change.<br />

We then choose the technologies<br />

to achieve the outcomes. Lastly,<br />

start small, celebrate progress and<br />

make incremental steps towards<br />

the big changes that will set up<br />

companies to face the pressing<br />

water challenges of tomorrow.<br />

The need is urgent and for the first<br />

time across the world, the water<br />

industry faces a confluence of<br />

political will and new technologies to<br />

bring humanity through the ongoing<br />

climate crisis. I am optimistic that<br />

the water industry will step up to the<br />

challenge and I am excited to be at<br />

the forefront with Xylem’s suite of<br />

enabling solutions.<br />

‘Xylem Vue powered<br />

by GoAigua’ (Image:<br />

Xylem)<br />

In the water industry, we<br />

deal with life and death<br />

issues when we look at<br />

water safety or flood<br />

control. Systems must<br />

ensure accountability and<br />

risk management remain<br />

in place as we explore AI in<br />

aiding the water industry.<br />

Ashley Ng<br />

Director, decision intelligence solutions, emerging markets<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 25


HOYA Electronics<br />

recycles more than<br />

75% of used water<br />

with PUB <strong>Water</strong><br />

Efficiency Fund<br />


WATER<br />





SYSTEM<br />

water supply from our production reduced<br />

about 75% of NE<strong>Water</strong> demand,” he said.<br />

“This saved our water bills and reduced<br />

our production costs, resulting in a better<br />

profit.”<br />

HOYA Electronics reportedly<br />

incorporated two additional treatments:<br />

electrodeionisation (EDI) system and<br />

reverse osmosis (RO) system to recycle<br />

rejected water to ensure only clean water<br />

is used for production. Using submersible<br />

pumps, this EDI system collects rejected<br />

water into a sump pit, which is then<br />

transferred to the process recycle water<br />

(PRW) storage tank for use in other areas<br />

such as makeup air unit (MAU) air washer<br />

drain to reuse cooling tower operations at<br />

rooftop and wastewater recycling.<br />


(Image: HOYA Electronics)<br />

HOYA Electronics — a large water user<br />

in the semiconductor industry — has<br />

exemplified how water efficiency is<br />

embraced with its water recycling<br />

initiatives over the past 5 years in<br />

Singapore. As a developer of advanced<br />

mask blanks, which are a critical<br />

component of the semiconductor<br />

manufacturing process, this large water<br />

user has achieved the highest water<br />

recycling rate in the semiconductor<br />

industry to date. Its water recycling rate<br />

reportedly increased from 29% in 2014 to<br />

over 75% in 2023.<br />

UPW<br />

PLANT<br />

REJECT<br />

WATER<br />

From 1 Jan <strong>2024</strong>, PUB, Singapore’s<br />

National <strong>Water</strong> Agency has introduced<br />

mandatory water recycling requirements<br />

for water intensive industries such<br />

as wafer fabrication, electronics, and<br />

biomedical industries. Its <strong>Water</strong> Efficiency<br />

Fund (WEF) was raised to S$5m per<br />

project from $1m to support companies<br />

AIR-CON<br />

DRAIN<br />

HOYA<br />





PLANT<br />



SYSTEM<br />



SYSTEM<br />



such as HOYA Electronics. Singapore’s<br />

total water demand is expected to double<br />

by 2065, with the non-domestic sector<br />

projected to account for two-thirds of<br />

this demand, according to PUB. With the<br />

second reading for the Public Utilities<br />

(Amendment) bill introduced in August<br />

2023, minister for sustainability and<br />

the environment Grace Fu announced<br />

enhancements to WEF from Jul 2023,<br />

supporting companies such as HOYA<br />

Electronics to implement water recycling.<br />

Sethurajan Muthukumar, staff engineer<br />

and water efficiency manager of HOYA<br />

Electronics, said that the company’s<br />

use of NE<strong>Water</strong> — a high-grade<br />

reclaimed water that has been purified<br />

with advanced membrane and UV<br />

technologies — for the processes<br />

depended on PUB supply initially. “After<br />

the implementation of these water<br />



recycling systems, a secondary source of<br />

According to Muthukumar, the MAU air<br />

washer drain used to discharge 77m 3 /day of<br />

water to public sewers. Now, the water<br />

is collected and transferred to cooling<br />

towers directly, reusing it instead of<br />

discharging it. With a water recycling facility<br />

behind its office building, wastewater from<br />

production discharge, fan dry coil unit and<br />

condensation are recycled there. The<br />

clean recycled water is then pumped<br />

back to its central NE<strong>Water</strong> tank for<br />

repeated use.<br />

From left: Roland Chan, deputy director, PUB water supply<br />

department and Sethurajan Muthukumar, staff engineer<br />

and water efficiency manager of HOYA Electronics<br />

(Image: HOYA Electronics)<br />

26 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

Reliable chemical analysers<br />

reduce maintenance<br />


By Annmarie Delfino, In-Situ content writer<br />

1<br />

1 The WHCRWA<br />

was created by<br />

Texas legislature<br />

to identify and<br />

secure a long-term,<br />

low-cost supply<br />

of quality drinking<br />

water (Image:<br />

In-Situ)<br />

2 ChemScan nutrient<br />

analyser (Image:<br />

In-Situ)<br />

A few years ago, US water utility company<br />

West Harris County Regional <strong>Water</strong><br />

Authority (WHCRWA) sought replacement<br />

analysers to reduce maintenance and run<br />

retreatment operations more efficiently.<br />

An upcoming expansion project adding<br />

two new pump stations to the district<br />

by 2025 makes reliable measurements<br />

more important, as WHCRWA will be<br />

responsible for blending water from<br />

multiple sources while still producing<br />

consistent residuals.<br />


The WHCRWA was originally created by<br />

the Texas legislature in 1975, in response<br />

to growing subsidence. In the early<br />

1970s, the use of groundwater without<br />

aquifer recharge caused subdivisions in<br />

the Baytown-Pasadena-Galveston area<br />

to sink below sea level, making them<br />

unliveable. WHCRWA was founded to help<br />

the district west of Houston shift its water<br />

supply from aquifers to surface water, to<br />

ease the stress on groundwater supplies<br />

and prevent subsidence.<br />

Currently, 30% of the water supplying<br />

West Harris county is required to come<br />

from surface water instead of well water.<br />

In 2025, that requirement will increase<br />

to 60%. To accommodate more surface<br />

water coming in from different<br />

areas, WHCRWA is building two<br />

new pump stations in the next two years.<br />

“We get about 28 million gallons of water a<br />

day,” said Bryan Thomas, area manager at<br />

Inframark, the private utility that operates<br />

the WHCRWA. “After the expansion, it will be<br />

110 million.”<br />

WHCRWA is responsible for making sure<br />

drinking water from plants in the city of<br />

Houston is treated before going out to<br />

customers in the surrounding area. They<br />

monitor the treated water they receive to<br />

verify that it meets requirements for total<br />

chlorine residuals. Accurate and continuous<br />

data is crucial to this process, but the<br />

analysers installed at WCHRWA were not<br />

performing as expected. “They required<br />

constant maintenance,” added Thomas.<br />

“When we did need to make an adjustment,<br />

there was a 30mins wait time in-between<br />

when we made the adjustment and when<br />

we could see if it was working.”<br />

With a small staff of three operators, the<br />

time and effort to maintain the analysers<br />

made working with them unsustainable.<br />

Thomas said that they had to maintain these<br />

things every week to keep them in a running<br />

state and they would fail after a couple of<br />

days which took up a lot of their time.<br />

2<br />


In 2019, WHCRWA started looking for<br />

replacement analysers. After comparing<br />

options, they selected two UV 2250 ChemScan<br />

analysers for chloramination. ChemScan is<br />

an In-Situ brand. ChemScan maintenance<br />

analysers proved reliable for the team and<br />

its two analysers provided continuous<br />

measurements of nitrate and ammonia to<br />

verify that WHCRWA meets residual limits after<br />

retreatment. This basic routine maintenance<br />

kept them running as expected.<br />

Incorporating new water sources from the two<br />

new pump stations will put more emphasis<br />

on retreatment. WHCRWA will monitor total<br />

chlorine residuals to make sure they fall within<br />

limits once water from the pump stations is<br />

combined. “Having these reliable analysers is<br />

going to help us maintain the residuals and not<br />

have to worry about it being too low on one<br />

end and too high on another,” said Thomas.<br />

Though the expansion project will change<br />

operations for the plant, the new analysers<br />

brought a peace of mind for the team. He<br />

added, “If we did have issues, we were not<br />

getting a consistent residual. We [now] have<br />

something that can give us a real number. It<br />

is not something that we have to guess at or<br />

constantly keep an eye on.”<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 27


Digital twins for water utilities<br />

validate economic feasibility<br />

by levelling system operations<br />

and improving decision-making<br />

By Sandra DiMatteo, industry marketing director, water infrastructure, Bentley Systems<br />

and connected digital twin environment<br />

that water utility personnel can use<br />

to gain insights from their data. The<br />

dynamic integration of operational data<br />

enables utilities to see what is happening<br />

in real-time or review any moment in<br />

time, while providing a definitive ledger<br />

of change of the water systems and<br />

assets as they evolve. This dynamic<br />

aspect is also what differentiates digital<br />

twins from the static 3D models typically<br />

used for design and construction.<br />

Capital planning and risk management (Image: Bentley Systems)<br />

From ageing infrastructure and changing WHAT IS A DIGITAL TWIN?<br />

environmental regulations to funding gaps A digital twin is a realistic and dynamic<br />

and climate-fuelled natural disasters, water virtual representation of a physical asset,<br />

utilities around the globe face problems in process, or system. Creating a digital twin<br />

delivering reliable and affordable water to for a water system involves integrating<br />

their communities. Their potential solutions existing models and data. This include<br />

are similarly wide-ranging, from stimulus engineering models such as hydraulic<br />

grants and conservation programmes to models of the water network and 3D<br />

smart water technologies.<br />

models of the water treatment plant and<br />

pumping stations; new virtual reality models<br />

Utilities employ digital strategies to<br />

if 3D models are inadequate, outdated, or<br />

address urgent risks and meet the<br />

non-existent; and GIS, asset management<br />

requirements for digital transformation and customer data. Additionally, digital<br />

aligned to strategic investments in water twins are continuously updated with<br />

systems. One compelling digital strategy operational data from supervisory control<br />

that water utilities adopt is a digital twin. and data acquisition (SCADA) systems,<br />

A digital twin of water infrastructure can sensors, meters, and other measured<br />

help utilities get the most out of their data sources — creating a real-time model that<br />

to improve their decision-making. Most can be used in operations and maintenance<br />

utilities have the key building blocks in (O&M).<br />

place to make digital twins economically<br />

feasible as a short-term strategy with The integration of isolated, disparate data<br />

long-term benefits.<br />

into a unified view provides a collaborative<br />

The end result is an information-rich<br />

digital infrastructure model that supports<br />

engineering, O&M, and capital planning<br />

for smart water networks. With digital<br />

twins, utilities can perform ‘what if’<br />

analyses and simulations throughout<br />

the lifecycle of a water system —<br />

from long-term system vulnerability<br />

and capacity planning to immediate<br />

performance monitoring and emergency<br />

response. The process enables utilities<br />

to better understand the past and<br />

current performance of their water<br />

systems while helping them predict<br />

future performance and simulate the<br />

impact of potential changes in the virtual<br />

world before funds are committed.<br />

Digital twins help develop smart<br />

sustainable water management platforms<br />

and decision support frameworks for<br />

the modern workforce. Furthermore,<br />

cloud-based digital twins enable the<br />

remote sharing of data, dashboards,<br />

and situational intelligence, overcoming<br />

the limitations of legacy water control<br />

28 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


rooms since it interoperates with systems<br />

and real-time data, SCADA, and data<br />

historians. A digital twin handles large<br />

volumes of disparate data sources to gain<br />

insights in real-time, and reduce false<br />

alarms.<br />


Moving toward a digital twin may seem<br />

daunting, but in reality, most water<br />

utilities have already started. They have<br />

in place systems that they use in their<br />

day-to-day operations: sensors, SCADA,<br />

automated metering, asset registry,<br />

hydraulic modelling, and so on. Since<br />

the fundamental purpose of a digital<br />

twin is to unite the data from different<br />

sources and provide a unified view of<br />

that data, utilities have already done the<br />

difficult work of implementing systems<br />

that generate digital data, which are the<br />

building blocks of their digital twin.<br />

The next step involves the mortar<br />

that connects that data. For a smooth<br />

journey, the technology underpinning a<br />

digital twin must be open. Digital twin<br />

technology is not off-the-shelf software.<br />

Instead, every digital twin is assembled,<br />

built, customised, and advanced using<br />

pieces from many sources that will<br />

change over time. To ensure that a utility<br />

controls their digital twin and can include<br />

the systems and data, they need to rely<br />

on technology that is open-sourced.<br />

This ‘openness’ signifies that the digital<br />

twin can connect smoothly with other<br />

technologies.<br />

The technology within that mortar must<br />

also include these other key features —<br />

decision-making tools and scalability.<br />

The importance of digital twin rests on<br />

the ability to use data to make informed<br />

decisions. This implies the use of built-in<br />

decision-making software that can link<br />

current status or conditions data with<br />

a robust, mature portfolio of tools for<br />

analyses and simulations. Scalability<br />

means that a digital twin can analyse<br />

at the scale of, for example, a city or a<br />

treatment plant, down to an individual<br />

pump or valve.<br />


Many utilities already have hydraulic<br />

models of their water networks that<br />

they use for planning and design.<br />

Incorporating those models within a<br />

digital twin helps utilities simulate events<br />

such as pipe failures, power outages,<br />

to analyse the resilience of their water<br />

network systems and assess their risk.<br />

Furthermore, integrating those models<br />

with SCADA data provides an accurate<br />

assessment of how a water system is<br />

currently behaving. This enables utilities<br />

to simulate and test different ways that<br />

their water systems could be operated to<br />

improve emergency response, increase<br />

efficiency, or save energy.<br />

Continuously updating digital twins with<br />

measured operational data also helps a<br />

utility determine the location of potential<br />

leaks and reduce water loss. A digital<br />

twin can leverage data from existing work<br />

management and asset management<br />

systems, as well as other enterprise<br />

systems, to support risk-based asset<br />

management — informing decisions such<br />

as repair versus replace and prioritising<br />

capital improvement projects.<br />


Digital twins of water and wastewater<br />

treatment plants (WWTPs) are useful<br />

to improve plant efficiency, reliability,<br />

and resilience as well as for training and<br />

safety compliance. Virtual walkthroughs,<br />

communications, and simulations<br />

give personnel enhanced visibility<br />

to plant data and insights for better<br />

decision-making. For example, reliability<br />

engineers can simulate hypothetical<br />

events such as a multiple screening<br />

system or pump failure to evaluate<br />

the severity and consequences of the<br />

failures and take preventative actions.<br />

Digital twins can also be used to flag real<br />

problems, such as equipment that is not<br />

operating properly — enabling virtual<br />

exploration and quick access to pertinent<br />

data. For example, operators can zoom<br />

into the equipment area and pull up<br />

data related to that manufacturers’<br />

specifications or repair manuals. This<br />

gives personnel immediate access to<br />

information without wasting time digging<br />

through file cabinets or hunting through<br />

document libraries.<br />


Digital twin technologies, such as<br />

OpenFlows powered by the Bentley iTwin<br />

platform, are smart integration solutions<br />

that connect information technology,<br />

operational technology, and engineering<br />

technology. These connections help<br />

water utilities exploit the potential of<br />

uniting legacy data with operational and<br />

engineering data to provide a wider view<br />

of a utility’s water system and enable<br />

data-driven decision-making.<br />

In the coming years, digital twins will<br />

become an ingrained part of every<br />

aspect of the water utility control room.<br />

Utilities can start building digital twins<br />

overnight with the data and systems they<br />

already use. As they become the new<br />

normal for water utilities, digital twins will<br />

improve the reliability of water systems,<br />

reduce utilities’ capital and operating<br />

expenditures, lessen environmental<br />

footprints, and provide customers with<br />

safe services.<br />

Sandra DiMatteo<br />

Industry marketing director,<br />

water infrastructure, Bentley Systems<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 29


Aerzen’s quantaer fine<br />

bubble aeration system<br />

saves resources<br />

1<br />

2<br />


Victor Valley <strong>Wastewater</strong><br />

Reclamation Authority (VVWRA)<br />

is an 18MGD activated sludge<br />

plant located 90mins north of Los<br />

Angeles in California, US. VVWRA<br />

uses plug flow extended aeration<br />

with anoxic selectors for alkalinity<br />

recovery process for biological<br />

treatment of their wastewater.<br />

The originally installed aeration<br />

system, utilising membrane tube<br />

diffusers, provided insufficient<br />

and inconsistent oxygen transfer<br />

required for removing ammonia.<br />

As a result, VVWRA could not<br />

meet their monthly average<br />

ammonia discharge limits on a<br />

consistent basis. The inconsistency<br />

in nitrification also leads to<br />

inconsistent denitrification within<br />

the biological treatment process.<br />

Inconsistent denitrification, required<br />

operation of the Mixed Liquor<br />

Recycle (MLR) pumps at 4.75<br />

times the influent flows to remove<br />

nitrogen, resulting in excess of<br />

US$150,000 annually for chemical<br />

costs for the addition of alkalinity.<br />

30 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>



In 2013, VVWRA evaluated an<br />

energy savings programme at<br />

VVWRA for four of their aeration<br />

basins by upgrading the existing<br />

tube diffusers to 9in quantaer<br />

membrane disc diffusers provided<br />

by Aquarius Technologies.<br />

Collaborating with Gilbert Perez,<br />

the plant director of operation,<br />

Aquarius was able to provide<br />

designs, calculations and equipment<br />

costs to retrofit the plant to newer<br />

and more efficient fine bubble disc<br />

diffusers. During the initial design,<br />

energy and chemical cost savings<br />

for the retrofit were expected to be<br />

30-40%. However, shortly after the<br />

installation, Perez and operators<br />

noticed the higher efficiency of<br />

new disc diffusers, dropped the<br />

air requirement 15%, and the MLR<br />

pump energy requirement by 45%.<br />

transfer efficiency of the system<br />

provided complete nitrification.<br />

The consistency in nitrates<br />

recycled into the anoxic tanks<br />

allowed for stable denitrification.<br />

As a result, the MLR pumps were<br />

turned down to 2.5 times the<br />

influent flowrate.<br />

The denitrification process now<br />

recovers sufficient alkalinity to<br />

eliminate the need of magnesium<br />

hydroxide dosing, saving VVWRA<br />

over $150,000 in chemical costs.<br />

After 12 months of operating<br />

basins 9-12, VVWRA contacted<br />

Aquarius with a similar request<br />

for an aeration retrofit in the<br />

remaining 8 basins as part of<br />

Phase 2. Aquarius teamed up<br />

with a consulting engineer and<br />

contractor to provide a more<br />

efficient system to further<br />

reduce half of the operating<br />

costs for the plant. The high<br />

efficiency aeration system and<br />

coordination between Aquarius<br />

and VVWRA have resulted in a<br />

system demonstrating the lowest<br />

cost of ownership.<br />

Images: VVWRA operating data<br />

1 Quantaer fine bubble disc diffuser system<br />

2 Top view of the plant<br />

3 Quantaer EPDM membrane disc diffusers<br />

operating at startup<br />

3<br />

As a result, VVWRA has realised<br />

over $30,000 in annual energy<br />

savings. VVWRA operations<br />

included dosing magnesium<br />

hydroxide for recovering alkalinity<br />

in the wastewater, which is<br />

consumed in the nitrification<br />

process. Since the denitrification<br />

process — which recovers alkalinity<br />

that were inconsistent — large<br />

doses of magnesium hydroxide<br />

were regularly required. After the<br />

installation of quantaer fine bubble<br />

aeration system, higher oxygen<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 31


The challenges of<br />

water management<br />

in South East <strong>Asia</strong><br />



The availability of freshwater in<br />

South East <strong>Asia</strong> is limited and<br />

unevenly distributed. According to<br />

ADB, urban centres are the main<br />

areas affected by this scarcity,<br />

although they are not the only<br />

ones. Many countries in the region<br />

face water shortages, especially in<br />

periods of drought, which affects<br />

the population, agriculture and<br />

industry. Idrica specialist Lorente<br />

said that a main challenge lies in<br />

optimising the management of this<br />

scarce resource throughout the<br />

entire water cycle, from catchment<br />

to potential reuse. Moreover,<br />

all the stakeholders interested<br />

in this cycle must be aligned to<br />

ensure fairer, more efficient water<br />

distribution.<br />

A study carried out by UN<br />

environmental programme<br />

highlighted that 80% of river water<br />

in the APAC region is polluted.<br />

Rapid industrial and urban<br />

development in some South East<br />

<strong>Asia</strong>n countries have brought<br />

The UN<br />

environmental<br />

programme<br />

highlighted that<br />

80% of river water in<br />

the APAC region is<br />

polluted<br />

<strong>Water</strong> management in South East <strong>Asia</strong><br />

poses challenges which are related<br />

to its geography, climate, population<br />

growth and economic development.<br />

For example, the increase in<br />

greenhouse gas (GHG) emissions and<br />

the consequent rise in temperatures in<br />

recent decades means that the region<br />

is highly vulnerable to climate change.<br />

Moreover, South East <strong>Asia</strong> plays<br />

host to 60% of the world population<br />

— primarily located in cities which<br />

release more heat and spread by<br />

building new constructions on flood<br />

plains — thus obstructing the natural<br />

course of waterways and increasing<br />

the risk of flooding. Urban growth<br />

also increases water stress. In 2015,<br />

the <strong>Asia</strong>n Development Bank (ADB)<br />

estimated that by 2030 there will be<br />

a 40% shortfall between water supply<br />

and demand in the region.<br />

Client solution architect at<br />

international water technology<br />

company specialising in smart<br />

solutions for utilities Idrica Víctor<br />

Lorente said, “It is essential to tackle<br />

water management challenges in<br />

South East <strong>Asia</strong> so as to safeguard<br />

the region’s sustainability and<br />

growth from a social, economic and<br />

industrial point of view.”<br />

This thus drives an urgent need to<br />

address water management issues in<br />

the region. Martin Shaw, non-revenue<br />

water (NRW) solution architect at<br />

Xylem, based in Malaysia, pointed<br />

to technology as a key player. “In an<br />

area with a burgeoning economy,<br />

technology becomes a lever for<br />

change to ensure the availability and<br />

sustainable management of water<br />

and sanitation services for all,” he<br />

said.<br />

water pollution from chemicals,<br />

industrial waste and untreated<br />

sewage. These affect water quality<br />

and the health of water-dependent<br />

communities.<br />





During the rainy season, South<br />

East <strong>Asia</strong> has to cope with severe<br />

floods that affect millions of people<br />

and cause property damage.<br />

The lack of sound infrastructure<br />

and efficient flood management<br />

systems exacerbates this problem.<br />

Many rivers and river basins here<br />

are shared by multiple countries,<br />

which can lead to disputes over<br />

the use and management of<br />

cross-border water resources.<br />

Rising temperatures and changes<br />

32 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


Many rivers and river<br />

basins here are shared<br />

by multiple countries,<br />

which can lead to<br />

disputes over the use<br />

and management of<br />

cross-border water<br />

resources<br />

in rainfall patterns due to climate<br />

change have an impact on water<br />

availability, the frequency and<br />

intensity of extreme events such as<br />

droughts and floods.<br />





Balancing economic development<br />

and environmental conservation<br />

is a major challenge for water<br />

management in the region. The<br />

economic development experienced<br />

by South East <strong>Asia</strong> in the last<br />

10 years has led to increased<br />

demand for water and energy, which<br />

in turn exacerbates water scarcity<br />

and pollution problems.<br />

In some areas, excessive<br />

groundwater extraction for irrigation<br />

and domestic use lead to aquifer<br />

depletion and saltwater intrusion,<br />

making water unsuitable for drinking<br />

and agriculture. Additional measures<br />

are essential, including programmes<br />

to improve non-conventional water<br />

sources, surface water storage, and<br />

demand management.<br />

Many parts of the region also<br />

lack good water infrastructure<br />

such as water treatment facilities,<br />

distribution networks and drainage<br />

systems, which affects access to<br />

safe drinking water and increases<br />

flood vulnerability. <strong>Asia</strong> accounts<br />

for about half of the world’s bottled<br />

water market which is a factor that<br />

discourages investment in public<br />

infrastructure.<br />



According to UN, approximately<br />

three out of every five people in<br />

the world live in <strong>Asia</strong> — which<br />

represents 60% of the global<br />

population — a figure that will remain<br />

the same in 2050. The increase of<br />

population and economic activities<br />

in cities combined with rapid urban<br />

development adds pressure on<br />

water resources as the demand for<br />

water increases. Additionally, yields<br />

from irrigated agriculture need<br />

to be increased, with 70% of water<br />

resources being used for this type<br />

of agriculture, causing greater water<br />

scarcity.<br />

Inconsistent water governance, lack<br />

of integrated water management and<br />

the overlap in responsibilities between<br />

various agencies often hinder the<br />

effectiveness of water management<br />

strategies. Environmental policies<br />

cannot be taken locally but must<br />

be wide-ranging and take in the<br />

complexity of ecological systems.<br />


South East <strong>Asia</strong>n countries need to<br />

adopt water management approaches<br />

that include implementing sustainable<br />

policies, strengthening water<br />

infrastructure, promoting water<br />

conservation, efficient water use,<br />

and regional cooperation to manage<br />

cross-border water resources jointly.<br />

In addition, public awareness and<br />

the active participation of local<br />

communities are crucial to achieve<br />

more effective water management in<br />

the region.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 33

FOCUS<br />

Energy efficient<br />

opportunities<br />

for wastewater<br />

treatment<br />

With the help of<br />

decanter centrifuge<br />

technology, a<br />

wastewater plant<br />

in China is able to<br />

achieve a low carbon<br />

solution that prioritises<br />

power consumption<br />

<strong>Wastewater</strong> treatment safeguards the<br />

environment and public health. But<br />

it comes at a cost; driven by energy<br />

consumption, operational expenses,<br />

and the challenges of managing these<br />

complex systems. In an era of rising<br />

environmental consciousness, it is<br />

crucial to address these challenges<br />

while striving for energy efficiency<br />

and cost-effectiveness in wastewater<br />

treatment.<br />

<strong>Wastewater</strong> treatment plants<br />

(WWTPs) account for about 30%<br />

of their total operational expenses.<br />

These facilities have to contend with<br />

rising costs of chemicals required<br />

to maintain water quality, proper<br />

treatment and disposal of sewage<br />

sludge generated during the process.<br />

Inefficient management compounds<br />

the problem as wastewater treatment<br />

is decentralised and complex, making<br />

data collection and supervision<br />

arduous.<br />

Drinking water and WWTPs are<br />

among the largest energy consumers<br />

globally, accounting for up to 4% of<br />

the world’s energy consumption.<br />

It is reported that merely 20% of<br />

these plants adequately treat their<br />

water, highlighting an untapped<br />

potential of untreated global<br />

wastewater. According to the UN<br />

Environment Programme (UNEP),<br />

approximately half of the world’s<br />

untreated wastewater still flows into<br />

rivers, lakes, and seas. The CO2<br />

emissions resulting from wastewater<br />

are substantial. UNEP reported<br />

that wastewater could serve as an<br />

alternative energy source for over<br />

half a billion people, deliver more<br />

than 10 times the water produced<br />

34 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

FOCUS<br />

company in China partnered with<br />

Alfa Laval — a global group in heat<br />

transfer, centrifugal separation, and<br />

fluid handling — to secure energy<br />

savings. This initiative is part of a<br />

larger project aimed at expanding<br />

an existing wastewater plant. The<br />

project, aligned with the government’s<br />

goals of water quality protection and<br />

industrial pollution reduction, focuses<br />

on water reuse and recycling. This<br />

endeavour supports China’s dualcarbon<br />

objectives to peak carbon<br />

emissions by 2030 and achieve<br />

carbon neutrality by 2060.<br />

The plant covers about 23.3 hectares<br />

and treats sewage at a capacity<br />

of 1.2 million m³ per day for a local<br />

1<br />

2<br />

population of approximately<br />

6 million inhabitants. After treatment,<br />

the clean water is discharged into<br />

the local river. Through the use of<br />

decanter technology, this project<br />

aims to eliminate and reduce overflow<br />

on both dry and rainy days, achieving<br />

a low-carbon solution that prioritises<br />

power and polymer consumption. It is<br />

projected to deliver energy efficiency<br />

improvements of 30-40% when<br />

measured against the performance of<br />

competitive solutions in China. Upon<br />

completion, the plant will reportedly<br />

rank among the largest in <strong>Asia</strong>.<br />


1 BOGE<br />

compressors<br />

can recover up<br />

to 94% of the<br />

energy used<br />

2 At the Laillé<br />

WWTP,<br />

connected<br />

photovoltaic<br />

trackers<br />

controlled by AI<br />

improves the<br />

efficiency of<br />

renewable energy<br />

production<br />

by desalination, and diminish the<br />

demand for synthetic fertilisers.<br />

Can these treatment plants harness<br />

energy from wastewater while<br />

treating it?<br />

Reducing operating costs while<br />

improving operational and energy<br />

efficiency simultaneously is a<br />

challenge for the water sector.<br />

“Against a background of climate<br />

protection goals and rising<br />

energy prices, energy efficiency<br />

in water treatment has become<br />

[a] major issue,” said Nalin<br />

Amunugama, general manager,<br />

BOGE Kompressoren <strong>Asia</strong>-Pacific.<br />

However, he added that energy<br />

efficiency is still an attainable goal.<br />

For wastewater treatment facilities,<br />

technologies to reduce energy<br />

consumption already exist. Investing<br />

in the right equipment and solutions<br />

like artificial intelligence (AI) pay off<br />

quickly and improve plant efficiency<br />

without undue expense, especially in<br />

older WWTPs.<br />



China offers an example of how<br />

energy savings can be achieved<br />

through the implementation of<br />

technology. A municipal wastewater<br />

Maximising the potential of<br />

technology is essential for improving<br />

productivity, minimising energy<br />

consumption, reducing losses,<br />

and optimising chemical usage<br />

in wastewater treatment. The<br />

Schwarzachgruppe Sewerage<br />

Association in Schwarzenbruck,<br />

Germany serves as an example<br />

of a WWTP that has embraced an<br />

energy-intelligent approach. This<br />

environmental innovation showcase<br />

project, in collaboration with<br />

technology company ABB, balances<br />

energy consumption and production<br />

without relying on external power<br />

sources.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 35

FOCUS<br />

ABB’s ‘Ability Energy Management’<br />

and ‘OPTIMAX’ allow existing<br />

energy generation and storage<br />

options to be networked, controlled<br />

and optimised. These include a<br />

hydroelectric power plant in the<br />

WWTP outlet, photovoltaic solar<br />

panels, two combined heat and<br />

power plants using sewage gas,<br />

electricity storage in batteries,<br />

sewage gas storage, heat storage<br />

and various storage units for the<br />

continuous provision of thermal or<br />

electrical energy required.<br />

In addition, the treatment plant<br />

operates like a grid, allowing assets<br />

to be controlled through an energy<br />

management system. In the event<br />

of an oversupply of electricity, the<br />

battery storage system is charged.<br />

During low production, the battery<br />

storage can be discharged. The<br />

pilot project reportedly achieved<br />

100% energy savings of the previous<br />

electricity consumption required<br />

from the grid.<br />


SAVERS<br />

Compressors and compressed air<br />

treatment technologies play a role in<br />

the energy consumption of WWTPs.<br />

In the US, these plants consume<br />

over 30 terawatt hours of electricity<br />

annually, resulting in US$2bn in<br />

electric costs. It is estimated that<br />

electricity expenses make up 40%<br />

of these plants’ annual operating<br />

budgets. The challenge lies in<br />

reducing energy consumption when<br />

the equipment and infrastructure do<br />

not prioritise energy efficiency.<br />

Air compressor specialist BOGE<br />

offers a solution to this issue. Their<br />

oil-injection cooled and oil-free<br />

screw compressors are designed to<br />

recover heat, which is often wasted<br />

in the production of compressed air.<br />

Instead of allowing it to dissipate<br />

as ambient heat, these modern<br />

compressors can recover up to 94%<br />

of the energy used, and transfer the<br />

heat from compressed air production<br />

to the desired process such as heat<br />

storage and operating areas, and<br />

for heating water or oils, without<br />

additional energy input. For older<br />

models, BOGE Duotherm system can<br />

be used with other brand systems. It<br />

is available in 5 power levels from<br />

7.5-110kW for easy integration<br />

into oil-injection cooled screw<br />

compressors. Amunugama added,<br />

“Through heat recovery, the<br />

compressor turns into an energy<br />

saver with a surge in overall<br />

efficiency, no matter what the original<br />

model or output was.”<br />



In France, the Laillé WWTP has<br />

installed photovoltaic trackers.<br />

Controlled by Purecontrol AI system,<br />

the trackers allow the treatment<br />

plant to limit energy consumption.<br />

Purecontrol developed an algorithm<br />

capable of real-time analysis of the<br />

plant’s processes.<br />

The use of intelligent and connected<br />

trackers are said to improve the<br />

efficiency of renewable energy<br />

production. By following the sunrays<br />

in an optimal way, the trackers obtain<br />

a production of renewable energy<br />

all-day long. This approach, first of<br />

its kind in France, has the potential to<br />

reduce the plant’s carbon footprint by<br />

about 300 tonnes of CO2 per year.<br />

Testing this solution at two WWTPs<br />

reportedly resulted in energy bill<br />

savings of 15-20%. The project is<br />

being deployed at other WWTPs in<br />

France. The AI system enables the<br />

adjustment of energy consumption to<br />

coincide with peak energy production<br />

from the photovoltaic trackers. In<br />

total, on an annual consumption of<br />

190,000kWh which is equivalent to<br />

40 households, the device will reduce<br />

the consumption of the equipment by<br />

43%, to 108,000KWh.<br />


WWTPs have the potential to<br />

reduce carbon footprint and<br />

energy costs as well as contribute<br />

to clean energy production.<br />

As our planet grapples with an<br />

expanding population and a rising<br />

demand for fresh water, treating<br />

wastewater is an urgent necessity.<br />

Managing wastewater safeguards<br />

our water supply and provides<br />

opportunities to recover resources.<br />

The circular economy concept has<br />

gained traction as a framework to<br />

transform wastewater management<br />

into a resource-efficient process,<br />

which will enable customers to<br />

enjoy cost-savings improvements<br />

and achieve sustainability targets in<br />

water resource management.<br />

“Amidst rising operational<br />

costs, the savings derived from<br />

improved energy efficiency<br />

will lead to quicker returns on<br />

initial investments,” Amunugama<br />

said. “These savings can then<br />

be reinvested in improvements,<br />

ensuring that WWTPs are<br />

well-equipped to meet future<br />

demands.”<br />

Images: BOGE<br />

Nalin Amunugama<br />

General manager,<br />

BOGE Kompressoren <strong>Asia</strong>-Pacific<br />

36 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

FOCUS<br />

Flow measurement<br />

of treated water<br />

for a drinking water<br />

supply system<br />

1 2<br />


An Australian water utilities provider<br />

manages the collection, treatment<br />

and distribution of water for a coastal<br />

local government area. To supply<br />

private households and industrial<br />

clients with more than 40 million<br />

litres of drinking water every day, the<br />

company operates a water treatment<br />

plant with a network of reservoirs,<br />

pumps as well as water mains.<br />


Given that water scarcity was an<br />

issue for the local council, flow<br />

measurement of treated water<br />

supplied to the network was critical.<br />

The treated water discharged from<br />

the main water treatment plant must<br />

always match with the quantities<br />

of water taken in from the adjacent<br />

river. The readings were also used<br />

to determine the amount of water<br />

being treated by the water treatment<br />

plant, as cross reference to the<br />

volume of chemicals being added<br />

and measured in the process such<br />

as chlorine gas, lime or carbon<br />

dioxide.<br />

The previously used electromagnetic<br />

flowmeter (EMF) from a competitor<br />

had not been up to the conditions<br />

and needed replacement. Due to<br />

burial installation, this meter had<br />

water ingress around the coil. This<br />

resulted in a low reading both on the<br />

instantaneous as well as the totalised<br />

flow rate. Overall accuracy was low<br />

and no longer up to the requirement<br />

of the customer.<br />

Due to the critical nature of this<br />

measurement point, the company<br />

needed a flowmeter that was made<br />

to the exact installation length of the<br />

previous one. Altering the pipe work<br />

was not an option as water supply<br />

must always be maintained. Reliable<br />

ingress protection of the flowmeter<br />

was compulsory.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 37

FOCUS<br />


The water utility opted for the<br />

OPTIFLUX 2300 electromagnetic<br />

flowmeter. This high-end EMF<br />

was suitable for potable water<br />

applications requiring high accuracy<br />

and extensive diagnostics. The EMF<br />

was provided in meter size DN900<br />

with a hard rubber liner as well as<br />

rugged Hastelloy-C22 electrodes<br />

which conformed to the national<br />

drinking water standards. While<br />

the readings were transmitted by<br />

simple 4-20mA output to a control<br />

room, the remote wall mounted<br />

signal converter also allowed local<br />

monitoring onsite.<br />

The EMF came IP68 rated with<br />

special burial coating for subsoil<br />

installation. This also involved<br />

potting compound, rendering the<br />

electronics of the flowmeter well<br />

protected against moisture or<br />

constant flooding. Potting is applied<br />

in all KROHNE subsoil applications as<br />

standard. The potting mix protected<br />

the terminals and conductors from<br />

any condensation or leakage which<br />

may occur through the junction box<br />

as a result of moisture in the soil<br />

or heavy rainfall. The compound<br />

also sealed cabling insulation from<br />

possible ingress of moisture and<br />

removed a path for water ingress<br />

to access coil windings through the<br />

neck of the flowmeter.<br />

3<br />


Due to its dimensions according to<br />

ISO standard, the KROHNE meter met<br />

the client’s requirements in terms of<br />

installation length. There was no need<br />

for further pipework and the given<br />

infrastructure remained unchanged.<br />

In this way, the water utility was<br />

able to complete the changeover of<br />

flowmeters within 8 hours, ensuring<br />

the water supply to the city was not<br />

compromised.<br />

The OPTIFLUX 2300 provided the<br />

company with reliable information to<br />

monitor water treatment efficiency.<br />

The EMF also helped the client<br />

demonstrate the performance of<br />

their water treatment plant to the<br />

water authorities, adding to other<br />

KROHNE products already in use<br />

in water as well as wastewater<br />

applications of the client.<br />

Images: KROHNE<br />

4<br />

1 Media leaking from inside the coil housing<br />

2 Damaged EMF before replacement<br />

3 OPTIFLUX 2300: EMF for advanced water<br />

and wastewater applications<br />

4 OPTIFLUX 2300 has cost-saving options<br />

without grounding rings and other variants<br />

38 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

Instrumentation confidence<br />

underpins power station<br />

performance<br />

FOCUS<br />

process. Low pH values in combination<br />

with turbulent flow conditions can cause<br />

flow-accelerated corrosion (FAC), which<br />

is known to be fast, destructive, and a<br />

main root cause of boiler tube failures.<br />

Power plant water steam cycle chemistry is<br />

therefore focused on minimising corrosion<br />

rates, as well as avoiding specific forms<br />

of corrosion such as FAC. Mitigating plant<br />

corrosion is achieved by continuously<br />

monitoring specific conductivity, as well as<br />

conductivity after cation exchange (CACE),<br />

degassed CACE, pH, dissolved oxygen and<br />

where required, silica and sodium analysis.<br />

VPI Rye house<br />

Steam and water quality analysis performs<br />

a role in the protection of power plants<br />

from corrosion and deposition in the water<br />

steam cycle. Small changes in water and<br />

steam quality have the potential to impact<br />

the performance of the power station<br />

and cause expensive outages. The cost<br />

of monitoring equipment is therefore<br />

negligible in comparison with the potential<br />

costs of failure to manage water and<br />

steam quality, so power plant chemists are<br />

seeking accuracy and reliability in their<br />

instrumentation.<br />

“Our main driver is to always ensure good<br />

feedwater quality, free from corrosive<br />

species,” said power station chemist Adrian<br />

Bailey from UK-based power company<br />

VPI. “We need instruments that deliver the<br />

highest performance levels continuously<br />

24/7, 365 days of the year. Having tried<br />

most of the monitors on the market, we<br />

have migrated almost all the water quality<br />

monitors at our five UK locations to Swan<br />

Analytical instruments.” In addition to risk<br />

reduction, water quality monitoring also<br />

enhances process efficiency, protects plant<br />

longevity and availability, and helps ensure<br />

compliance with environmental permits.<br />


Various forms of corrosion can affect<br />

the metallic surfaces within the internal<br />

components of power plants. Corrosion<br />

is an electrochemical process, and<br />

any buildup of dissolved contaminants<br />

such as chlorides, sulphates or other<br />

detrimental species could enhance the<br />

risk of corrosion such as pitting, flow<br />

accelerated corrosion and stress corrosion<br />

cracking. This risk is amplified where high<br />

temperatures accelerate the corrosion<br />



VPI is one of the Combined Cycle Gas<br />

Turbine (CCGT) operators in the UK, with<br />

assets capable of generating 3.3 gigawatts<br />

(GW) of power; sufficient for around 3 million<br />

homes. The company is committed to being<br />

part of the UK’s pathway to net zero, and in<br />

the short-term, investing in its existing plant<br />

to protect the reliability of the UK’s power<br />

supply during turbulent times in the energy<br />

sector.<br />

Bailey said, “The operation of our existing<br />

portfolio represents a challenge because<br />

most power stations were designed to operate<br />

continuously, rather than the stop-start regime<br />

that is required by today’s rapidly fluctuating<br />

supply and demand energy market; a situation<br />

which can increase potential corrosion risks.”<br />

VPI UK locations include Damhead Creek in<br />

Kent, Shoreham in West Sussex, Blackburn<br />

in Lancashire, Rye House in Hertfordshire,<br />

and Immingham in Lincolnshire. In order to<br />

minimise corrosion, all of VPI plants dose<br />

condensate, feedwater with ammonia or<br />

amine blends to establish a specific alkaline<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 39

FOCUS<br />

pH. However, these alkalising agents<br />

could potentially mask the presence of<br />

low-level contaminants, so in addition<br />

to continuous measurements of pH and<br />

specific conductivity, VPI plants also monitor<br />

underlying conductivity with Swan AMI CACE<br />

instrument, which removes the ammonia<br />

from samples and changes contaminants into<br />

their acid form to amplify their conductivity,<br />

and thereby enable early detection.<br />

Dissolved gases, such as carbon dioxide,<br />

can also mask the presence of low-level<br />

contaminants by contributing to the CACE<br />

value. The VPI plants also use Swan<br />

instruments to monitor degassed CACE<br />

continuously. Differential analysis of CACE<br />

and degassed CACE indicate whether an<br />

elevated cation conductivity value is due<br />

to the presence of carbon dioxide or more<br />

corrosive ions such as chloride and sulphate.<br />

In addition to conductivity and pH, VPI also<br />

employs Swan analysers to monitor trace<br />

amounts of dissolved oxygen, silica, and<br />

sodium, as well as turbidity which is used for<br />

trend monitoring for particulate corrosion<br />

products.<br />

1<br />



Swan conductivity and pH analysers were<br />

first installed at Rye house power station<br />

around 2007, and the first Swan silica<br />

analyser was installed at Damhead around<br />

2009. “At that time, there was no common<br />

policy for instrumentation, and each power<br />

station was running different analysers,”<br />

said Bailey. “Service and maintenance<br />

procedures varied considerably, and the<br />

availability of spares and consumables was<br />

more complicated. However, the early Swan<br />

analysers performed, so we have gradually<br />

migrated almost all of our instruments, at all<br />

of the sites, to Swan.”<br />

Bailey added, “The most important feature<br />

of an instrument is the confidence that it<br />

inspires in its operators, and this is where<br />

Swan led the field. We routinely take grab<br />

samples for laboratory analysis to check<br />

the accuracy of the monitors, and this data<br />

gave us the confidence to roll them out<br />

more widely.<br />

“The amount of time spent on instrument<br />

maintenance is also a key issue, and<br />

one in which Swan excels. With high<br />

levels of reliability and low maintenance<br />

requirements, their instruments [are]<br />

simple to operate; the menus are easy<br />

to follow, without the necessity to<br />

memorise the manual, which means that<br />

the requirement for operator training is<br />

minimal. Occasionally, we need to utilise<br />

Swan’s technical support, and their staff are<br />

experienced, so they are able to respond<br />

quickly to our requests.”<br />

Swan power product specialist Chris Mead<br />

said, “Our monitors are factory-calibrated<br />

and pre-mounted on sample panels, making<br />

1 Swan instrumentation monitoring water steam<br />

cycles at VPI Immingham power station<br />

2 Swan instrumentation monitoring water steam<br />

cycles at VPI Shoreham<br />

them easier to install and integrate. With<br />

a single source of low-maintenance<br />

instruments, the cost of ownership is<br />

lower. However, the costs associated<br />

with the purchase and operation of Swan<br />

instruments are negligible in comparison<br />

with the potential cost implications of<br />

plant failure or asset downtime, so whilst<br />

we supply instruments, what we deliver is<br />

peace of mind.”<br />

Images: Swan Analytical<br />

2<br />

40 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

FOCUS<br />

Mine water treatment<br />

relies on borehole loggers<br />

1<br />

For the last 9 years, Severn Trent<br />

Services has managed a contract<br />

for mine water treatment across<br />

the Coal Authority estate, including<br />

73 mine water treatment schemes<br />

in England, Scotland and Wales,<br />

the UK. These schemes take<br />

the form of three types: passive,<br />

pumped-passive and active. <strong>Water</strong><br />

levels are one of the elements<br />

monitored at these sites, which<br />

have approximately 600 monitoring<br />

points. The majority of the readings<br />

are obtained manually with dip tapes,<br />

and by utilising loggers, around 125<br />

of which are OTT ecoLog water level<br />

loggers.<br />

At most sites, mine water is pumped<br />

to a treatment facility which<br />

employs oxygenation, filtration and<br />

sedimentation to raise the quality<br />

of the water in compliance with<br />

discharge consents. “Mine water<br />

from legacy coal mines is treated<br />

at many of these sites utilising<br />

settlement lagoons and reed beds,”<br />

said Oren Environmental data and<br />

reporting manager Paul Robinson.<br />

He added that the management of<br />

these resources is dependent on<br />

reliable data including water level<br />

measurements, which they have<br />

been using OTT instruments since<br />

2016. With the benefit of water level<br />

data, the flow of water through the<br />

lagoons and reedbeds is ensured<br />

to maximise treatment before water<br />

is discharged to watercourse,<br />

according to Robinson.<br />

“One of the capabilities of the<br />

loggers is to create alarms and we<br />

are investigating for future use,” he<br />

said. “In addition to the older ecoLog<br />

500 and the newer ecoLog 1000,<br />

we also utilise five ecoLog 800 to<br />

collect and monitor conductivity<br />

measurements. Conductivity data<br />

can be used to assess the quality of<br />

water by identifying minerals that are<br />

present in the water.”<br />

Where the ecoLogs are deployed<br />

in surface water weirs, the level<br />

measurements are translated into<br />

flow, which informs the management<br />

of the treatment process. Many of<br />

the original water level loggers were<br />

ecoLog 500 devices, some of which<br />

are still in operation. However, these<br />

are being gradually replaced by<br />

ecoLog 1000 instruments. Robinson<br />

said that the ecoLog 1000 has<br />

an advantageous feature. “Data<br />

from the older units was collected<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 41

FOCUS<br />

using a USB cable, however the<br />

newer instruments have Bluetooth<br />

connectivity, which means that our<br />

operators can connect more quickly<br />

and in adverse weather. They can<br />

also drive close to the logger and<br />

communicate wirelessly with a<br />

smartphone or laptop from their<br />

vehicle,” he added.<br />

The ecoLog 1000 is reportedly an<br />

all-in-one instrument, including a<br />

water level sensor, a logger, and<br />

a built-in modem. It requires no<br />

additional tools for maintenance or<br />

battery replacement, and has been<br />

designed for long-term, unattended<br />

monitoring in challenging conditions.<br />

Key features include low-power<br />

operation including Bluetooth<br />

low energy, as well as a rugged<br />

stainless steel pressure probe<br />

housing and a ceramic temperature<br />

compensated sensor. Typically,<br />

remote connectivity is achieved via<br />

cellular network.<br />

Force Crag mine in the Lake district<br />

is an example of a remote former<br />

mine with challenging environmental<br />

conditions. Cellular coverage is<br />

limited onsite, so OTT built a local<br />

network which transmits water level<br />

data via radio to two loggers located<br />

in a higher position. Data from these<br />

loggers are then transmitted regularly<br />

to Oren File Transfer Protocol (FTP)<br />

server.<br />

Mining commenced at Force Crag in<br />

1835, and it became the last working<br />

metal mine of zinc, lead and barytes<br />

in the Lake district, prior to its final<br />

closure in 1991. Metal pollution such<br />

as zinc, cadmium and lead from the<br />

mine polluted the Coledale Beck, a<br />

tributary of the river Derwent and<br />

Bassenthwaite Lake Special Area of<br />

Conservation.<br />

The Coal Authority, working in<br />

partnership with the Environment<br />

Agency, Newcastle University and<br />

the National Trust, devised a passive<br />

mine water treatment scheme to<br />

reduce the levels of metal pollution<br />

entering the river. The scheme, which<br />

opened in 2015, diverts water from<br />

the level 1 of a horizontal passage to<br />

an underground mine and routes it<br />

through a buried transfer pipe to two<br />

vertical flow ponds for treatment.<br />

The ponds were built using the<br />

existing bunding of the former<br />

mining tailings lagoon, lined with<br />

a geomembrane, and filled with a<br />

compost treatment mix. <strong>Water</strong> is fed<br />

into the ponds, where it flows down<br />

through the compost and passes into<br />

a wetland, planted with soft rushes.<br />

The wetland filters any remaining<br />

solids and oxygenates the water prior<br />

to discharge into the Coledale Beck.<br />

“Each site presents its own<br />

challenges,” Robinson said. “Many<br />

are in remote areas and in different<br />

environments, so we maximise the<br />

equipment to hand such as the<br />

OTT ecoLogs. Remote telemetry is<br />

advantageous because it provides<br />

access to more frequent data than<br />

manual dips due to the schedule of<br />

visits that we work to.”<br />

Images: OTT Hydromet<br />

2 3<br />

1 Force Cragg<br />

2 OTT 1000<br />

connection<br />

3 ecoLog 1000<br />

installed<br />

42 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

FOCUS<br />

Materials can impact<br />

product design life and<br />

produce safer drinking water<br />

By Timothy Fallon, Pratt technical sales manager, Mueller<br />

As water utilities are looking for<br />

ways to do more with less, some<br />

manufacturers are investing in R&D<br />

to improve the product by using new<br />

materials to extend product life and<br />

value. A simple choice of material<br />

can impact the design life, function,<br />

and performance. One change that<br />

has all three beneficial outcomes<br />

for water distribution is moving<br />

from nitrile (Buna-N) to Ethylene<br />

Propylene Diene Monomer (EPDM)<br />

for valve seats.<br />

Nitrile rubber or Buna-N, also known<br />

as Nitrile Butadiene Rubber (NBR)<br />

and acrylonitrile (ACN) butadiene<br />

rubber are synthetic rubber derived<br />

from ACN and butadiene. Buna-N<br />

is a general-purpose oil-resistant<br />

polymer that has good resistance<br />

to solvents, oil, water, and hydraulic<br />

fluid with good compression set<br />

properties. It also has acceptable<br />

resistance to abrasion and good<br />

tensile strength in laboratory tests.<br />

The resistance to solvents —<br />

particularly oils — has made Buna-N<br />

a popular elastomer candidate for<br />

use when collecting raw water,<br />

where pollution and illegal dumping<br />

have allowed petrochemicals<br />

to infiltrate freshwater supplies.<br />

Buna-N elastomers are also used<br />

in wastewater applications where<br />

resistance to solvents and oils is<br />

important.<br />

These properties are a reason<br />

Buna-N has been a choice for<br />

elastomeric seats used in multiple<br />

types of valves including butterfly,<br />

rubber seated ball, and resilient<br />

seated check and gate valves in<br />

North America.<br />

It has always been the mission<br />

of water utilities to provide<br />

safe drinking water, but<br />

contaminants are on the rise<br />

so municipalities have to do<br />

more testing and look at a broader<br />

spectrum of treatment solutions.<br />

One treatment that is becoming<br />

more common and in increasing<br />

quantities is the use of<br />

chloramines to disinfect<br />

drinking water. This has<br />

been standard practice<br />

in other parts of the<br />

world, and as a result,<br />

they have discovered<br />

that increased chloramine<br />

use leads to substantially<br />

higher rates of valve seat<br />

failure. It became evident that<br />

chloramine usage was the cause<br />

of Buna-N elastomer degradation<br />

characterised as mass change, which<br />

is due to the rubber swelling up in<br />

the presence of chloramines. Mass<br />

change is the result of excessive<br />

water absorption. Other failure<br />

modes are increased susceptibility<br />

to breaking stress and strain, along<br />

with increasing hardness, where the<br />

rubber is simply losing its elastomeric<br />

properties.<br />

When the integrity of any elastomer is<br />

compromised, chemicals or additives<br />

can leach into the drinking water.<br />

When certain standard minimum<br />

concentrations are detected, the<br />

rubber compound is designated<br />

unworthy for use in drinking water<br />

applications, per the guidelines set in<br />

NSF/ANSI 61: drinking water system<br />

components — health effects. In<br />

order to ensure the rubber compound<br />

is safe for use in drinking water or<br />

wastewater applications, the rubber<br />

compound should be thoroughly<br />

evaluated to the NSF standards as<br />

appropriate.<br />

Pratt butterfly valve<br />

(Image: Mueller)<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 43

FOCUS<br />



As the trend in chloramine treatment<br />

increases in North America, a new<br />

approach will be needed to ensure<br />

drinking water is safe and that valves<br />

continue to perform without having<br />

to send out crews to replace failing<br />

seats, which could result in service<br />

disruption. EPDM is appearing as<br />

a suitable replacement, given the<br />

changing water environment and a<br />

superior performing elastomer, when<br />

compared to Buna-N. However, not all<br />

rubber compounds perform the same.<br />

There are some Buna-N compounds<br />

that perform well under adverse<br />

conditions. The same can be said for<br />

Styrene-Butadiene Rubber (SBR),<br />

natural rubber and neoprene rubber.<br />

The most common way to confirm<br />

the integrity of the specific rubber<br />

compound is by testing it under lab<br />

conditions. Many formulations of<br />

peroxide-cured EPDM are favoured<br />

as less susceptible to chloramine<br />

degradation followed by many<br />

formulations of Buna-N, SBR, natural<br />

rubber, and neoprene rubber. As<br />

new methods of disinfection come<br />

into play, manufacturers of water<br />

infrastructure will need to adapt and<br />

innovate products to better meet<br />

the needs of the municipal water<br />

industry.<br />

The decision as to what rubber<br />

compound to use is commonly<br />

based upon past practice and often<br />

outdated specification language.<br />

Given research and its mandate<br />

to continuously innovate the<br />

functionality and extend the product<br />

life of water infrastructure solutions,<br />

Henry Pratt company is moving to<br />

EPDM seats as the standard seat<br />

configuration for all Pratt butterfly<br />

valves. EDM is also readily available<br />

and globally sourced, reducing the<br />

challenges of supply chain issues<br />

that have arisen since the start of the<br />

pandemic.<br />

“By standardising on one seat<br />

material, which removes some of the<br />

decision-making processes through<br />

providing an EPDM seat, the physical<br />

properties are better when held<br />

up against chloramine attack. We<br />

anticipate water utilities will welcome<br />

the upgrade. Once maintenance<br />

crews see the improvement in<br />

durability, we anticipate EPDM will be<br />

the preferred choice for replacement<br />

seats,” said Tom Velkovich, sales<br />

director for the Henry Pratt company.<br />

As materials improve and industry<br />

standards evolve, utilities often<br />

adopt these changes when they<br />

upgrade facilities or perform<br />

routine maintenance that requires<br />

replacement parts. The latter is<br />

when utilities have an ongoing<br />

ability to adopt better designs and<br />

materials, increase the design life of<br />

existing infrastructure, and reduce<br />

the frequency of maintenance.<br />

Knowing what new materials and<br />

design improvements are available<br />

for new builds or plant upgrades is<br />

also key to ensuring utilities are well<br />

positioned to handle the challenges<br />

of today and the evolving landscape<br />

of delivering safe drinking water to<br />

all citizens.<br />

Pratt butterfly valve<br />

(Image: Mueller)<br />

44 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


Transforming<br />

waste into wealth:<br />

Altent Renewables solution<br />

to water-rich sludge<br />

By Benjamin Wan, CTO and co-founder, Altent Renewables<br />

urgency for a sustainable paradigm<br />

shift. On a global scale, more than<br />

US$20bn is spent on sludge disposal<br />

annually.<br />

However, Altent Renewables sees<br />

this challenge as an opportunity.<br />

Leveraging its Altent hydrothermal<br />

process, the company converts<br />

challenging sludge waste into fuels and<br />

minerals, creating a revenue stream<br />

for waste producers and making waste<br />

disposal more sustainable. Altent<br />

Renewables is a part of the 2023<br />

cohort of the Ripple2wave Incubator,<br />

which is supported by EnterpriseSG<br />

and PUB, Singapore’s National <strong>Water</strong><br />

Agency. The incubator’s mandate is to<br />

nurture the growth of early-stage water<br />

tech startups.<br />



At the heart of Altent’s technology<br />

Altent Renewables<br />

lab-scale waste<br />

conversion unit in<br />

Tuas, Singapore<br />

Altent Renewables is a Singapore-based<br />

startup that offers a solution for the<br />

inefficiency in managing sludge waste,<br />

including sewage sludge, bio-sludge<br />

and oil sludge — a critical issue in<br />

the wastewater treatment industry.<br />

These water-rich waste materials pose<br />

challenges for conventional disposal<br />

methods, incurring costs for waste<br />

producers and resulting in minimal<br />

resource recovery. In Singapore,<br />

260,000 tonnes of sewage sludge are<br />

generated annually, which is directed<br />

for incineration. Beyond financial<br />

implications, harmful emissions such<br />

as nitrogen oxide and carbon dioxide,<br />

coupled with filling landfills like Pulau<br />

Semakau by 2035, underscore the<br />

lies hydrothermal gasification — a<br />

process for converting high-moisture<br />

waste into gaseous fuel with minimal<br />

solid byproducts. This method<br />

allows for the efficient conversion of<br />

challenging sludge waste, as well as<br />

other wet waste streams including<br />

food and agricultural waste, into fuels<br />

and minerals. Unlike conventional<br />

gasification methods that necessitate<br />

energy-intensive drying processes,<br />

Altent’s hydrothermal gasification<br />

circumvents these penalties, leading to<br />

enhanced resource recovery.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 45


A pivotal element in Altent’s<br />

hydrothermal process is supercritical<br />

water. At conditions above the critical<br />

point of water at 374°C and 22.1<br />

megapascal (MPa), water exists in a<br />

dense phase with unique properties<br />

unlike that of liquid water or gaseous<br />

steam. This medium facilitates the<br />

rapid dissolution and decomposition<br />

of organic compounds through ionic,<br />

radical, hydrolysis, and pyrolysis<br />

reaction mechanisms, unlocking the<br />

potential of sludge waste for energy<br />

recovery. Not only does supercritical<br />

water accelerate the breakdown of<br />

complex organic compounds, it also<br />

serves as an excellent solvent for<br />

intermediate and gaseous products<br />

resulting from the decomposition<br />

process. This dual functionality<br />

contributes to the versatility of the<br />

Altent’s technology, setting it apart<br />

from conventional waste-to-energy<br />

methods.<br />

1<br />

1 Comparison of<br />

energy conversion<br />

efficiencies<br />

of competing<br />

technologies at<br />

varying moisture<br />

content<br />

2 Panel discussion<br />

at Singapore<br />

International<br />

Energy Week<br />

(SIEW), from<br />

left: Altent<br />

Renewables<br />

co-founder<br />

Tan Wee Han<br />



Altent’s hydrothermal technology offers<br />

advantages crucial for effective wet<br />

waste management. The production<br />

of clean effluent water ensures<br />

environmentally-friendly outcomes,<br />

aligning with the increasing demand<br />

for sustainable practices. The<br />

flexibility of feedstock, a cornerstone<br />

of Altent’s approach, allows for<br />

the processing of diverse waste<br />

streams, enhancing the adaptability<br />

of the technology to different waste<br />

compositions. Additionally, the high<br />

throughput capacity of Altent’s system<br />

ensures a rapid conversion process,<br />

further reinforcing its position as a<br />

cost-effective solution.<br />

One of Altent’s achievements is<br />

its efficiency in handling highwater-content<br />

waste. When the<br />

water content exceeds 30%, and at<br />

levels above 80% — common with<br />

sewage sludge — Altent outperforms<br />

competitors by double. This efficiency<br />

is a testament to the performance of<br />

2<br />

Altent’s hydrothermal technology,<br />

showcasing its capability<br />

to navigate the challenges posed by<br />

water-rich waste materials more<br />

effectively than alternative methods<br />

like pyrolysis or thermal gasification.<br />



Altent technology excels both in<br />

waste conversion efficiency and<br />

energy management. Hydrothermal<br />

gasification reduces the energy<br />

penalties associated with drying<br />

high-moisture feedstocks, as is<br />

common in traditional gasification<br />

processes. Although substantial<br />

heat input is still required, the energy<br />

needed to heat water to 600°C at<br />

30MPa is marginally higher than that<br />

required for heating at 0.1MPa, where<br />

evaporation occurs. In the case of<br />

46 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


supercritical water, the heat is more<br />

readily recoverable than the latent<br />

heat of vaporisation. This energy<br />

efficiency contributes to the overall<br />

sustainability and viability of the<br />

Altent hydrothermal process.<br />

Altent’s approach stands in contrast<br />

to anaerobic digestion (AD), which,<br />

while addressing wet waste,<br />

often incurs high capital costs<br />

and demands space, producing<br />

a moisture-laden solid byproduct<br />

that does not have a ready market.<br />

Altent’s hydrothermal technology,<br />

with its streamlined approach,<br />

promises a more efficient and<br />

economically-viable solution to wet<br />

waste management challenges.<br />


The Altent’s hydrothermal process<br />

has been proven in a lab-scale<br />

wet waste processing plant. The<br />

experimental setup designed,<br />

developed, and deployed by the<br />

founders is engineered for continuous<br />

operation with minimal supervision,<br />

requiring limited oversight only during<br />

startup. With a maximum throughput<br />

capacity of 3.4L/hr, the system<br />

processes feedstock into the desired<br />

outputs which are then analysed.<br />

The high-temperature-resistant<br />

reactor, operational at temperatures<br />

above 500°C and at a maximum<br />

pressure of 30MPa, is equipped with<br />

a specialised solid management<br />

system ensuring optimal performance<br />

and longevity. This lab study lays<br />

the groundwork for a scaled-up pilot<br />

system, emphasising its potential for<br />

commercial implementation.<br />

Altent has obtained a Letter of<br />

Intent (LOI) for a pilot project and<br />

is currently engaged in ongoing<br />

discussions with two companies<br />

for potential long-term commercial<br />

partnerships. Additionally, it has<br />

attracted other parties across<br />

various industries, highlighting the<br />

market demand for its technology.<br />

Guided by mentors in the Shell<br />

Startup Engine programme and the<br />

Ripple2Wave incubator, Altent takes<br />

pride in strategic guidance on its<br />

entrepreneurial journey.<br />



Having navigated the lab phase with a<br />

Technology Readiness Level (TRL) of<br />

4, Altent is set to enter the pilot phase<br />

within the next 12 months, increasing<br />

the TRL to 7. This is in partnership<br />

with a local waste management<br />

company to testbed the pilot system.<br />

The pilot project marks a step<br />

towards commercialisation, aiming to<br />

secure 10% of Singapore’s food waste<br />

market with a TRL of 9 by 2026. The<br />

company plans to further expand<br />

into other wet waste streams, both<br />

domestically and regionally, by 2028.<br />

3<br />

4<br />

Altent Renewables emerges as a<br />

force in the waste management<br />

sector, offering solutions to the global<br />

challenge of inefficient sludge waste<br />

management. With its hydrothermal<br />

process, the company not only<br />

addresses the environmental impact<br />

of water-rich waste materials but turns<br />

this challenge into an opportunity<br />

for sustainable resource recovery.<br />

As Altent progresses from lab-scale<br />

testing to the pilot phase, it is poised<br />

to make an impact on Singapore’s<br />

sludge waste market and beyond.<br />

The commitment of the Altent team,<br />

coupled with partnerships and a<br />

roadmap, positions the company as a<br />

player in shaping a more resourceful<br />

future for the world.<br />

Images: Altent Renewables<br />

3 Altent Renewables<br />

co-founder<br />

Wan pitching at<br />

‘Deal Fridays x<br />

Sustainability’<br />

event organised<br />

by Enterprise<br />

Singapore<br />

4 Altent Renewables<br />

co-founder Wan<br />

speaking at<br />

Ripple2Wave<br />

incubator opening<br />

ceremony<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 47


Sullage water treatment<br />

using CDS technology<br />

in Malaysia<br />

By Yale Wong, managing director, EcoClean Technology, and Prof Teo Fang Yenn, associate dean,<br />

faculty of science and engineering, University of Nottingham Malaysia<br />

Sullage water is neither considered in<br />

the Malaysia stormwater manual nor the<br />

sewerage guideline for developers. It is<br />

therefore allowed to flow into the drainage<br />

system, polluting rivers. The objective of this<br />

project was to achieve water quality index<br />

(WQI) class IIB in the effluent discharge<br />

at Tiong Nam urban area, Kuala Lumpur,<br />

Malaysia. The sullage water treatment<br />

plant (SWTP) uses continuous deflective<br />

separation (CDS) technology as gross<br />

pollutant trap, flocculation, bioreactor tanks<br />

with final capture of biomass and CDS hybrid<br />

inclined plate clarifiers. <strong>Water</strong> samples were<br />

tested for its WQI for three months and the<br />

WQI reportedly improved after implementing<br />

the SWTP, arriving at class IIA.<br />


AREA<br />

Apart from installing various types of trash<br />

traps along rivers and more than 300 gross<br />

pollutant traps within the drainage system<br />

to improve the water quality of the Klang<br />

and Gombak rivers under phase one of the<br />

River of Life project, the federal government<br />

of Malaysia allocated additional funds to<br />

construct about 20 SWTPs. Hundreds of<br />

kilometres of drainage interceptors and<br />

pipelines were built to collect and channel<br />

the sullage water to these SWTPs for<br />

treatment before releasing the treated<br />

effluent into the rivers. The SWTPs were<br />

constructed in different parcels at different<br />

stages of completion, all of which were<br />

aimed at raising WQI from the current<br />

class IV and class IV — which are both<br />

not suitable for body contact — to class<br />

IIB which is suitable for body contact and<br />

recreational usage.<br />

For WQI class IIB, the parameters tested for quality of the effluent. The client, Kuala<br />

each influent and effluent were dissolved Lumpur City Hall, and the department of<br />

oxygen (DO), temperature, pH, biochemical irrigation and drainage accepted the WQI<br />

oxygen demand (BOD), chemical oxygen results which were consistent with class IIA,<br />

demand (COD), total suspended solid (TSS), a standard achieved beyond the targeted<br />

ammoniacal nitrogen (AN), and Escherichiacoli<br />

(E-coli). Design and build subcontractor<br />

result of class IIB.<br />

EcoClean Technology proposed an alternative METHOD<br />

design which was accepted. The completed The plant operationally starts from the<br />

SWTP was tested and commissioned before primary screening at the intake sump<br />

the outbreak of COVID-19 in 2020. The followed by the mixing process in the<br />

water quality sampling was carried out by equalising tank. A series of submersible<br />

an authorised independent team and the pumps are used to draw water from the<br />

testing was by an independent laboratory. equalising tank to feed directly with a CDS<br />

EcoClean continued to operate the plant via technology. The CDS technology was quoted<br />

the supervisory control and data acquisition in the fifth edition of wastewater engineering<br />

(SCADA) system during the lockdown. treatment and resource recovery as a grit<br />

separator for combined wastewater and<br />

The results were submitted to the authority stormwater.* The CDS technology indirect<br />

regularly after 3 months of operation, along screening was also reportedly used for the<br />

with weekly lab results done on the water first time in Malaysia (Fig. 1).<br />

Fig. 1: Illustration of CDS technology and indirect screening<br />

48 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


The second process after the<br />

CDS-gross screen separator (GSS)<br />

separation involves flocculation<br />

whereby the sullage water —<br />

treated by the CDS-GSS unit with<br />

70% TSS removed — goes through<br />

the flocculation process. Further<br />

reaction will occur when the<br />

remaining fine particles form flocs<br />

and is further trapped by the next<br />

CDS-GSS unit which has a finer<br />

separation screen than the first<br />

CDS-GSS unit.<br />

The trapped flocs residue will be<br />

purged — when it is full at the<br />

sump below the screen — to a<br />

separate dee bag sludge treatment<br />

process unit. The flow which has<br />

most of the fine TSS removed, will<br />

continue to reach the following<br />

detention tank for the biological<br />

treatment. The inside of this tank<br />

consists of suspended biofibre<br />

cords in submerged cages with<br />

cultured bacteria. Below these<br />

cages is the network of aeration<br />

piping with fine bubble diffusers.<br />

This is an aerobic process to<br />

enable attached growth on the<br />

biofibre chords to form a biofilm<br />

colony. Biofilm will consume the<br />

nutrients — organic and inorganic<br />

— from the sullage water.<br />

Interceptors<br />

<strong>Water</strong> collected<br />

from manholes<br />

of intermediate subindices.<br />

Calculations were performed on<br />

the water quality parameters to<br />

find individual subindices to get<br />

WQI classification (Fig. 3). The<br />

WQI result on the first month of<br />

operation of Tiong Nam SWTP<br />

was 56.52 which fell under the<br />

polluted category as the system<br />

only kickstarted and the bacteria<br />

was not fully grown and mature.<br />

However, in the following months,<br />

the WQI fell under the clean<br />

category which are 90.28 and<br />

92.01. Thus, the CDS units with<br />

integrated Tiong Nam SWTP<br />

treatment system had been<br />

effective in treating the polluted<br />

sullage water quality within a<br />

month of its commissioning.<br />

Parameter<br />

Pump sump<br />

SWTP<br />

Control panel<br />

room<br />

CDS-GSS<br />

F1518<br />

Dosing<br />

system<br />

Index range<br />


This SWTP, designed by<br />

EcoClean Technology, made use<br />

of the CDS technology to treat<br />

sullage water in the rivers, which<br />

the WQI of class IV and V were<br />

raised to class IIA. The water<br />

quality of class IIA is considered<br />

a standard except for traces of<br />

E-Coli where further treatment<br />

like ozonation or UV disinfectant<br />

could be applied. Therefore,<br />

the stormwater loop has been<br />

closed and a circular economy<br />

is created by making effluents<br />

reusable for non-potable<br />

purposes.<br />

Equalisation tank<br />

Treated water tank<br />

*References are available upon request<br />

Images: EcoClean Technology<br />

Clean Slightly polluted Polluted<br />

WQI 81-100 60-80 0-59<br />

River<br />

Bioflocculation and<br />

coagulation tank<br />

CDS-FSS F1518C<br />

CDS-FSS F1518<br />

Bioreactor<br />

Fig. 2: Overall<br />

Tiong Nam SWTP flow<br />

process designed by<br />

EcoClean Technology<br />

Fig. 3: WQI<br />

classification<br />

With the expectation of biomass<br />

formation and shaken off as<br />

suspended biomass in the<br />

bioreactor tank under the constant<br />

supply of air, the fully treated<br />

sullage water is pumped through<br />

and further purified via the last<br />

unit of hybrid CDS-fine screen<br />

separator (FSS)-inclined plate<br />

clarifier (IPC) and stored in a clear<br />

water tank to be overflown out<br />

constantly to the adjacent Gombak<br />

river (Fig. 2).<br />


The WQI was calculated using six<br />

parameters: DO, BOD, COD, TSS,<br />

AN, and pH with the inclusion<br />

Yale Wong<br />

Managing director, EcoClean Technology<br />

Prof Teo Fang Yenn<br />

Associate dean, faculty of science<br />

and engineering, University of<br />

Nottingham Malaysia<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 49

[Trade Fair] Vietwater 2023<br />

11-13 Oct 2023, Ho Chi Minh, Vietnam<br />


OF THE<br />


WATER<br />







SWA spearheaded the Singapore pavilion at the 14th Vietwater<br />

2023 in Ho Chi Minh, Vietnam. The pavilion hosted 7 companies<br />

within a 90m 2 of exhibition space, benefitting from a subsidy of up<br />

to 70% on booth participation fees. The three-day event offered<br />

business prospects for Singaporean exhibitors. It provided a platform<br />

to showcase their water-related expertise and solutions, attract<br />

inquiries for technologies, engage in trade with solution providers,<br />

exchange practices, and stay abreast of global trends. This has<br />

prompted exhibitors to participate again in <strong>2024</strong>, scheduled from<br />

6-8 Nov <strong>2024</strong>.

[Event] Third meeting of SG <strong>Water</strong> Internationalisation Networking Club<br />

27 Oct 2023, CALI, Ascott Raffles Place Singapore<br />

The third meeting of SG <strong>Water</strong> Internationalisation Networking<br />

Club (INC) convened 25 attendees. Charles Lim, senior<br />

development partner at Enterprise Singapore, provided insights<br />

about market sharing in Vietnam. Tan Tian Luh, director at<br />

Chancery Law Corporation, addressed the assembly on risk<br />

management in overseas contracting. He conducted a SWA<br />

masterclass training session centred around the Public Sector<br />

Standard Conditions Of Contract (PSSCOC) and FIDIC Silver Book.<br />

The meeting also included <strong>2024</strong> work plan discussions, culminating<br />

in a networking session with canapes, dinner, beer and wine.<br />

[Event] The 49th Singapore <strong>Water</strong> Industry Nite<br />

2 Nov 2023, Peirce auditorium, PUB <strong>Water</strong>Hub<br />

The 49th edition of Singapore <strong>Water</strong> Industry Nite (SWIN)<br />

was sponsored by ROXTEC Singapore. The event featured<br />

various programme highlights, including a welcome address<br />

and updates delivered by SWA, insights shared by ROXTEC<br />

Singapore and a presentation by PUB, Singapore's National<br />

<strong>Water</strong> Agency, on water recycling opportunities and funding<br />

support. Singapore University of Technology and Design (SUTD)<br />

introduced the centre for climate adaption and ripple2wave<br />

provided an informative sharing. PUB also sponsored<br />

Newbrew, which was served during the networking dinner with<br />

bartending cocktails, catering to over 130 guests and members<br />

in attendance.

[Visit] Suruhanjaya Perkhidmatan Air Negara Malaysia<br />

15 Nov 2023, Singapore <strong>Water</strong> Exchange (SgWX)<br />

The Suruhanjaya Perkhidmatan Air Negara (SPAN) delegation,<br />

representing PUB counterpart overseeing water services in<br />

Malaysia, met SWA members. They were presented with solutions<br />

by SEA 2023 exhibitors and SG <strong>Water</strong> Inc members — Aquax, HSL<br />

Constructor, Novexx and Tigernix. SPAN’s visit focused on learning<br />

about distribution loss and Singapore's technologies for leakage<br />

prevention; understanding PUB regulatory roles and strategies for<br />

efficient water use; exploring sewerage catchment management;<br />

and Singapore's deep tunnel system. The event was attended by<br />

30 SWA members, extended with a networking lunch.<br />

[Event] Coastal protection, securing a<br />

resilient future for Singapore<br />

17 Nov 2023, Enterprise Singapore, Bugis Junction<br />

The sharing session underscored the vulnerability of Singapore<br />

coastal areas. With these challenges, urgent action is crucial to<br />

safeguard and preserve shorelines. This discussion forum served<br />

as a platform to address coastal protection, a pivotal aspect in<br />

ensuring Singapore's future security. Plans to establish a ‘SWA<br />

Coastal Protection Chapter’ was also unveiled during this event.<br />

Commencing with a welcome address by Charles Quek, SWA<br />

council vice-president of general affairs, and opening remarks<br />

from Hazel Khoo, director of coastal protection at PUB, the<br />

session featured insights from various speakers. James Lam, SWA<br />

chair of Protem committee; Celine Teo, senior assistant director<br />

of coastal protection department; Peter Ho, representing the<br />

forum for climate change adaptation; and Peter Stones from Arup<br />

provided industry perspectives. The session offered insights to<br />

120 attendees and concluded with a brief networking tea break.

[Trade Fair] Sustainability<br />

Environment <strong>Asia</strong> 2023<br />

22-24 Nov 2023, Kuala Lumpur, Malaysia<br />

SWA led the Singapore pavilion at the inaugural Sustainability<br />

Environment <strong>Asia</strong> (SEA) 2023 at Kuala Lumpur Convention Centre<br />

(KLCC) from 22-24 Nov 2023 with a total space of 126m 2 shared by<br />

five Singapore companies. Singapore exhibitors enjoyed the Local<br />

Enterprise and Association Development International Fairs and<br />

Missions (LEAD IFM) subsidy of up to 70% on booth participating<br />

fees.<br />

SWA led a business mission with 15-member delegation to Indah<br />

<strong>Water</strong> Konsortium, Langat wastewater treatment plant (WWTP),<br />

and Air Selangor, Langat water treatment plant (WTP), on 21 Nov<br />

2023. On 22 Nov 2023, the Singapore business forum helped<br />

facilitate B2B meetings with Malaysia <strong>Water</strong> Association (MWA)<br />

members to create new business partnerships. SWA vice-president<br />

Quek was also interviewed by Malaysian news media Bernama at<br />

the show and he shared about getting ASEAN countries to work<br />

together in addressing climate change and sustainability.<br />

[Visit] Central Taiwan Science Park<br />

29 Nov 2023, Pierce auditorium, PUB <strong>Water</strong>Hub<br />

The event provided an overview of Central Taiwan Science<br />

Park (CTSP) growth, technological advancements, and its<br />

role in driving industrial development. Twenty attendees<br />

learned about the achievements and the strategic vision<br />

guiding its future initiatives. A networking lunch was<br />

provided at the end of the session by Wilo Group. Plans are<br />

underway for a mission trip to CTSP in <strong>2024</strong>.


[Trade Fair] <strong>Asia</strong>water <strong>2024</strong><br />

23-25 Apr <strong>2024</strong>, Kuala Lumpur, Malaysia<br />

SWA is set to oversee a 240m 2 Singapore pavilion at the 13th<br />

edition of <strong>Asia</strong>water <strong>2024</strong>, scheduled to take place at KLCC from<br />

23-25 Apr <strong>2024</strong>. This event stands as an extensive international<br />

gathering for water and wastewater in emerging <strong>Asia</strong>. It<br />

will exhibit high-tech low-cost products and solutions from<br />

worldwide sources, highlighting advancements in water resources<br />

management, sewerage, industrial wastewater treatment,<br />

purification, irrigation, and other related fields. Grant support of<br />

up to 70% from Enterprise Singapore can be given to exhibitors.<br />

For more information, please contact jasvinder@swa.org.sg.<br />


(joined from October-November 2023)<br />


1. Mlion Corporation Pte Ltd<br />

2. Woh Hup (Private) Ltd<br />

3. Van Oord Dredging and Marine Contractors bv<br />


1. Dr Lin Quanhong<br />


1. Binder Instrumentation Pte Ltd<br />

2. Tigernix Pte Ltd<br />

<strong>2024</strong> EVENTS CALENDAR<br />

We look forward to your support in <strong>2024</strong>. Download the event<br />

calendar: https://www.swa.org.sg/wp-content/uploads/2022/08/<br />

Calendar-of-SWA-Workplan-<strong>2024</strong>.pdf.<br />

For queries, please contact SWA at T: 65150812 or<br />

enquiry@swa.org.sg. To stay connected, visit https://www.swa.org.sg,<br />

and follow us on Telegram, LinkedIn, Instagram and WhatsApp.<br />

JOIN SWA?<br />

SWA welcomes organisations from the water and wastewater<br />

industry to join as either ordinary, associate or institutional member.<br />

Sign up at https://www.swa.org.sg/membership/sign-up-online.


New KSB<br />

submersible pumps<br />

in discharge tube for<br />

a range of applications<br />

KSB group has launched a new<br />

submersible pump in discharge<br />

tube with open multi-vane impeller<br />

in Q4 2023. The type series has<br />

been named AmaCan D. Its main<br />

application is transporting large<br />

volumes of municipal or industrial<br />

water as well as wastewater from<br />

stormwater, drainage and irrigation<br />

pumping stations. When selected<br />

with optional corrosion-resistant<br />

and abrasion-resistant materials,<br />

the type series can also be used in<br />

water pollution and flood control or<br />

in seawater aquaculture systems.<br />

The pump generates a maximum<br />

flow rate of 8000m3/hr and a<br />

maximum discharge head of about<br />

30m. The highest motor rating<br />

available as standard is 340kW.<br />

Priorities set by the developers<br />

were to achieve a high operating<br />

reliability of the waste water<br />

hydraulic systems as well as high<br />

hydraulic efficiencies. Here, typical<br />

operating ranges of submersible<br />

pumps in discharge tube were<br />

focused.<br />

The outer design of the pump<br />

sets has been shaped by the<br />

manufacturer for this type of<br />

pumps. The pump’s self-centering<br />

and non-positive seating in the<br />

discharge tube, sealed by an<br />

O-ring, makes it easy to install<br />

and remove. No anchoring or<br />

anti-rotation elements are<br />

needed.<br />

Integrated and intelligent sensor<br />

monitoring detects any vibrations<br />

or leakages and measures the<br />

temperature of bearings and motor.<br />

It provides continuous supervision<br />

of operation and early detection of<br />

malfunctions as well as the option<br />

of predictive maintenance. With<br />

regard to low electricity consumption,<br />

the drives of submersible pumps<br />

in discharge tube also play a role.<br />

Hence, all electric motors are of an<br />

efficiency corresponding to class<br />

IE3 for standardised motors to IEC<br />

60034-30. This is important for<br />

powerful pumps with a high frequency<br />

of starts.<br />

Two bidirectional mechanical<br />

seals prevent water ingress into<br />

the motor space. A chamber filled<br />

with environmentally-friendly oil<br />

ensures cooling and lubrication of<br />

the mechanical seals even when<br />

gas-laden fluids have to be pumped.<br />

Dimensioned ball bearings sealed for<br />

life support the stainless steel shaft.<br />

The design of the cable gland:<br />

individual conductors stripped, tinned<br />

and sealed in resin ensure that the<br />

cable gland is watertight. In the event<br />

of damage to the cable sheath or<br />

the insulation, the pump is protected<br />

against short circuits due to its<br />

design. To ensure that the pumps can<br />

be dismantled after years of operation<br />

under tough conditions, all wetted<br />

screwed connections are made of<br />

high-grade stainless steel.<br />

1 AmaCan D<br />

(Image: KSB)<br />

2 D Impeller<br />

(Image: KSB)<br />

1<br />

2<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 55


Sumitomo speed<br />

reducer: Cyclo 6000<br />

With over eight decades of history,<br />

Cyclo technology has been<br />

integrated into one of Sumitomo Drive<br />

technologies products — Cyclo 6000<br />

— which is synonymous to a speed<br />

reducer.<br />

Unlike geared designs, the Cyclo<br />

reduction components operate in<br />

compression rather than shear, which<br />

reportedly results in its rugged and<br />

500% momentary shock resistant<br />

performance.<br />

This design enables the load to spread<br />

across two-third of the reduction<br />

components, allowing the units to<br />

absorb and dissipate shocks better<br />

than typical concentric drives. All<br />

torque transmitting parts reportedly<br />

roll, not grind.<br />

1<br />

The Cyclo disc rotating components<br />

are also manufactured from fully<br />

hardened, vacuum-degassed, bearing<br />

grade steel that provides minimal<br />

vibration, low noise, low backlash<br />

and extended operational life. Due to<br />

its flat Cyclo disc arrangement, it is<br />

compact, even at high reduction rates.<br />

These make the discs consistent and<br />

allow it to run on a typical operating<br />

life of 20 years. This assurance is<br />

backed with a two-year warranty on all<br />

Cyclo 6000 products.<br />

(Image: Sumitomo)<br />

On top of the mechanism and design,<br />

Cyclo 6000 housings are made of<br />

shock-resistant cast iron, except for<br />

three smallest size models. Its durable<br />

and rugged construction allows it<br />

withstand high heat, suitable for most<br />

applications. It can be manufactured in<br />

a range of reduction ratios in a single<br />

reduction, from 2.5-119. The selection<br />

and variety are wide, and reduction<br />

ratios are offered from 1/2.5-1/119<br />

for single stage and ratios up to<br />

658503:1 for triple stages. They are<br />

said to be easily configured to both<br />

double and triple reduction types by<br />

layering the reducer mechanisms.<br />

Over the years, Cyclo 6000 has<br />

run on a variety of applications<br />

across different industries, such<br />

as mixers, pumps, wastewater<br />

treatment, conveyors, automotive<br />

plants, recycling machines, steel<br />

mills, construction equipment,<br />

paper mills, palm oil mills, food<br />

machinery, poultry plants, sawmills<br />

and wood mills and processing<br />

plants.<br />

1 The Cyclo design<br />

provides quiet<br />

and efficient<br />

performance,<br />

making both<br />

its speed<br />

reducers and<br />

gearmotors<br />

series, the<br />

premier in-line<br />

drives (Image:<br />

Sumitomo)<br />

56 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


New SO-3<br />

screw compressor<br />

from BOGE<br />

BOGE SO-3 oil-free screw compressor has<br />

improved energy efficiency (Image: BOGE)<br />

With the introduction of the SO-3<br />

oil-free screw compressor, BOGE<br />

has improved the energy efficiency<br />

of its SO series. The specific power<br />

consumption has been increased<br />

by 8%. The developed air end of<br />

the compressor has low speeds,<br />

and subsequently low compressor<br />

temperatures, with its wear-resistant<br />

design. The integrated IE4 drive<br />

motor also contributes to its<br />

cost-effective operation. The<br />

cooling system has low compression<br />

and output temperatures. While the<br />

screw compressor is compact, the<br />

components are still accessible for<br />

maintenance purposes. Specific<br />

sound insulation measures have<br />

been implemented to reduce noise<br />

levels. The compressor is available<br />

with frequency control and heat<br />

recovery, as required.<br />

“What BOGE offers is maximum<br />

flexibility and additional options<br />

to increase efficiency,” said Nalin<br />

Amunugama, general manager,<br />

BOGE Kompressoren <strong>Asia</strong>-Pacific.<br />

“The heat recovery enables up to<br />

94% of the applied energy to be used<br />

to heat the service water and for the<br />

heating system.”<br />

In the total cost of ownership<br />

evaluation, the compressor has low<br />

total costs over its entire life cycle.<br />

Further advantages include the large<br />

control range, quiet operation and<br />

the option to recover heat from hot<br />

water temperatures of up to 90°C.<br />



The SO-3 is also equipped with<br />

the optional service tool BOGE<br />

connect. The compressed air<br />

expert provides a compressed<br />

air management system. “All of<br />

the operating parameters are<br />

continuously recorded, visualised<br />

and analysed in our portal potential<br />

optimisations,” Amunugama added.<br />

With options to connect<br />

adsorptions dryers and<br />

other accessories, the BOGE<br />

SO-3 screw compressor is a<br />

customised solution for a variety<br />

of applications that require large<br />

quantities of high-quality, oil-free<br />

compressed air. This ensures<br />

the compressor can be used in<br />

different sectors such as the<br />

pharmaceutical, F&B and textile<br />

industries; mechanical engineering<br />

applications and industrial coating<br />

companies.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 57


Transmitter for precise<br />

drinking water flow<br />

measurements<br />

NIVUS NivuFlow 600WS, a system for<br />

non-contact flow measurement, is developed for<br />

drinking water applications as a new standard<br />

for measuring and monitoring drinking water<br />

flows. The measurement system is said to have<br />

a simple installation without the need to interrupt<br />

the process along with its high measurement<br />

accuracy.<br />

1<br />

2<br />

The NivuFlow 600WS records<br />

and monitors all system-relevant<br />

parameters such as the flow rate,<br />

flow speed and water temperature,<br />

including low flow speeds of<br />

up to 3cm/sec. The NivuFlow<br />

600WS is also suitable for leakage<br />

monitoring in the drinking water<br />

network with simultaneous<br />

monitoring of the temperature<br />

relevant for hygienic operation.<br />

Commissioning is straightforward<br />

due to the menu-supported sensor<br />

alignment. The measurement<br />

system is reportedly suitable<br />

for common pipe materials<br />

and pipe linings. It can also be<br />

installed directly in the ground<br />

without the need for a shaft<br />

structure. The IP68 clamp-on<br />

sensors are clamped onto the<br />

pipe from the outside. This<br />

mounting prevents frequent<br />

opening and, if necessary, cut<br />

the pipe and then flush the pipe.<br />

The intuitive operating concept<br />

of the transmitter enables quick<br />

commissioning and also on-site<br />

diagnostics with Internet of Things<br />

(IoT)-ready function and 4G<br />

connection.<br />

1 The system also has measurement<br />

dynamics and is suitable for<br />

bidirectional measurements<br />

(Image: NIVUS)<br />

2 Flow transmitter for drinking<br />

water applications (Image: NIVUS)<br />

Furthermore, the sensors do not<br />

come into contact with the drinking<br />

water, guaranteeing hygiene and<br />

making the measurement system<br />

suitable for retrofitting to existing<br />

systems. Operations can continue<br />

smoothly while the measurement<br />

is set-up within minutes. Typical<br />

applications include flow<br />

measurements in drinking water<br />

tanks, pumping stations and<br />

treatment plants.<br />

58 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


ANDRITZ C-press<br />

screw press:<br />

The operator-friendly<br />

technology for<br />

dewatering<br />

mode with user-friendly control system,<br />

minimum operator supervision is required.<br />

This makes it ideal for small-scale startup<br />

WWTPs.<br />



The ANDRITZ C-press is also reportedly<br />

designed with quality materials for a longer<br />

life cycle and with fewer wear parts. Due<br />

to its design, machine maintenance can be<br />

conducted easily without removing screw<br />

and basket from the frame. When necessary,<br />

the inner screen can be exchanged without<br />

having to replace the complete basket. This<br />

is said to reduce downtime and increase<br />

machine availability.<br />

With its direct drive system and conical shaft<br />

with constant screw pitch, the complete<br />

C-press screw press range — with the<br />

C12060 being the largest — has feed<br />

capacities ranging from 1-95m³/hr and offers<br />

outlet capacities from 20-1,300kg of dry<br />

solids per hour.<br />

ANDRITZ C-press C12060 — one of the highest capacity<br />

screw presses on the market with an average dry-solids<br />

throughput of 420-1,300kg/hr (Image: ANDRITZ)<br />

The ANDRITZ C-press is a screw press<br />

providing high performance with low<br />

operating costs for sludge dewatering<br />

in municipal and industrial wastewater<br />

treatment plants (WWTPs). It is reportedly<br />

developed with long-standing expertise in<br />

designing and manufacturing screw presses.<br />

Globally recognised, this equipment offers<br />

an array of benefits for dewatering municipal<br />

and industrial wastewater.<br />



The inline compact design of the C-press<br />

ensures it occupies a small footprint,<br />

making installation quick. The C-press also<br />

operates at low speed, consuming minimal<br />

energy. This low power consumption not<br />

only reduces operational costs, but also<br />

diminishes the carbon footprint of the<br />

WWTP.<br />

Maximising the open area of the basket, the<br />

C-press also offers a high specific capacity<br />

and capture rate compared to equivalent<br />

technologies. The screw velocity is adjusted<br />

automatically according to feed fluctuation to<br />

ensure a constant feed flow while delivering<br />

performance in terms of dryness and capture<br />

rate, even during washing sequences.<br />

In a statement, Nicolas Perrier, ANDRITZ<br />

product manager said that the equipment<br />

offers low consumption of water — 30% less<br />

than comparable equipment — for washing.<br />

“We do not need to stop the sludge feed<br />

to carry out washings, so we can operate<br />

continuously with greater productivity,” he<br />

said.<br />

A fully-automatic machine with continuous<br />

control of performance, screw speed,<br />

counter-pressure, and washing, the ANDRITZ<br />

C-press is said to be an operator-friendly<br />

screw press that grants consistent<br />

performance with low power consumption,<br />

emissions, and maintenance. The C-press<br />

also complies with regulations on safety,<br />

hygiene, and environmental protection issues.<br />



The enclosed design of the C-press ensures<br />

minimal odour emissions, providing a clean<br />

working space. Moreover, it operates<br />

at less than 60 A-weighted decibels<br />

(dBA), reducing noise emissions, and<br />

thus promoting an overall better working<br />

environment. Operating in full-automatic<br />

Perrier added, “The C12060 — one of the<br />

highest capacities on the market — is an<br />

alternative to other large technologies<br />

for sludge dewatering, such as large belt<br />

presses, which are more energy-intensive and<br />

more demanding in maintenance. ANDRITZ<br />

has a wide range on the market to meet<br />

the separation needs of customers in the<br />

environmental sector.”<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 59


Danfoss DST P10B CANopen<br />

pressure transmitter<br />

for sensor-level connectivity<br />

Sensor-level digital communication is<br />

necessary to push industrial applications<br />

and automation forward. As part of its<br />

mission to expand the Danfoss Smart<br />

Sensor portfolio, the DST P10B CANopen<br />

pressure transmitter is introduced. It<br />

is said to be the first release of a new<br />

pressure transmitter platform built on<br />

the DST P1XX product range with several<br />

fieldbus protocols in scope for the future<br />

— supporting greater energy efficiency,<br />

operational optimisation, and performance.<br />

1<br />

2<br />

1 CAN bus connectivity<br />

provides smart sensor<br />

data with scalability<br />

(Image: Danfoss)<br />

2 DST P10B CANopen<br />

pressure transmitter<br />

(Image: Danfoss)<br />

Built on top of DST P1XX pressure<br />

transmitter, the DST P10B delivers a<br />

CANopen DS301/DS404 communication<br />

profile to add sensors to existing<br />

high-level fieldbus communication<br />

in water distribution; air compressor;<br />

heating, ventilation, air conditioning<br />

and refrigeration (HVACR); and<br />

other applications. The embedded<br />

communication protocol allows for more<br />

sophisticated communication between<br />

the sensor and the application interface<br />

to create and access new features for<br />

optimised performance while reducing<br />

complexity.<br />

“The DST P10B CANopen pressure<br />

transmitter helps our customers keep<br />

pace with industry trends, new application<br />

requirements, and the ongoing Industry<br />

4.0 journey,” said Peter Sonderriis, market<br />

segment manager at Danfoss Climate<br />

Solutions.<br />

Its features are actionable data and<br />

boosted reliability due to optimised<br />

packaging of the microelectromechanical<br />

system (MEMS) sensor element. The<br />

signal-conditioning electronics are<br />

vibration-, heat-, and moisture-resistant,<br />

and optimised with a faster time-to-market<br />

due to the ‘test-to-failure’ development<br />

process. The diagnostics integrate<br />

electronic capabilities in the actionable<br />

sensor data give more accurate and<br />

cost-saving troubleshooting. Furthermore,<br />

the new modular electronics platform and<br />

fieldbus interface enable finetuning the<br />

sensor to specific application needs for<br />

simple scalability. Connecting the sensor<br />

to the fieldbus channel simplifies the<br />

wire harness and streamlines root cause<br />

analysis, lowering system cost.<br />

Industries have been empowered by<br />

digitalisation, gaining more efficiency,<br />

optimised performance, and safety<br />

from their applications. When smart<br />

communication on the sensor level is<br />

added, Danfoss reportedly helps customers<br />

build solutions in demanding industrial<br />

applications. Iro Dragoumi, portfolio and<br />

business development manager at Danfoss<br />

Sensing Solutions, said, “The key advantage<br />

is that fieldbus communication allows you<br />

to access more actionable sensor data —<br />

from diagnostics to part information — to<br />

reduce application complexity, increase the<br />

quality of the monitoring system, and boost<br />

uptime.”<br />

The benefits of CAN bus communication<br />

include a simplified wire harness at the<br />

edge. Smart sensors can be daisy-chained<br />

to a fieldbus cable rather than requiring<br />

individual cables running to the controller<br />

as in analogue sensors in an advanced<br />

application control loop. Digital fieldbus<br />

sensors relieve adding analogue sensors to<br />

application-specific controllers, making it<br />

simple to expand the communication protocol<br />

down to the sensor and actuator level. With<br />

fieldbus communication, each sensor is said<br />

to have its unique identification supporting<br />

easier troubleshooting and a higher quality of<br />

information being sent to the controller.<br />

The application data gathered by smart<br />

sensors are the key to driving future<br />

industrial developments feeding new<br />

innovations such as machine learning (ML)<br />

and artificial intelligence (AI) algorithms<br />

for predictive maintenance, machine<br />

health monitoring, and boosting system<br />

performance. With the introduction of<br />

the DST P10B CANopen and the ongoing<br />

expansion of the DST P1XX platform<br />

with CAN bus protocols, Danfoss helps<br />

customers navigate the digital sensor<br />

frontier.<br />

60 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


GWS ASME series:<br />

Heavy duty pressure vessels<br />

GWS is a manufacturer of pressure<br />

vessels built to the American<br />

Society of Mechanical Engineers<br />

(ASME) boiler and pressure vessel<br />

code, one of the world’s most<br />

rigorous quality standards.<br />

With design, fabrication, assembly,<br />

and inspection carried out in GWS’<br />

own ASME-accredited facility,<br />

these pressure vessels ensure<br />

the safety, reliability and peace<br />

of mind for customers’ most<br />

challenging applications. Standard<br />

volumes range from 60-3,000L<br />

with a 10bar pressure rating and<br />

interchangeable membrane design.<br />

All vessels are manufactured in an<br />

ISO 9001/14001/45001 approved<br />

facility.<br />

In addition to the standard<br />

range, GWS also offers a suite of<br />

ASME pressure vessel design and<br />

fabrication services for custom<br />

sizes and pressure ratings to suit<br />

any application, and supplies<br />

these with U-stamp to ensure<br />

regulatory compliance.<br />

Certified to ASME boiler and<br />

pressure section VIII division 1<br />

code, permanent data record is<br />

maintained for each vessel<br />

(Image: GWS)<br />

Emerson launches compact<br />

valve position indicator<br />

for quick commissioning<br />

Emerson’s new TopWorx DVR switchbox —<br />

an entry-level addition to the DV series of<br />

valve position indicators combines a durable<br />

resin enclosure, compact size and a cam<br />

design — provides water and wastewater<br />

systems, F&B production lines and industrial<br />

utilities a valve position feedback tool.<br />

The TopWorx DVR switchbox uses a low<br />

profile indication to provide easy-to-read<br />

local position feedback. This is real-time<br />

data that helps plant operators keep<br />

processes on target. Engineered for harsh<br />

environments, it features stainless steel<br />

components to provide a corrosion-resistant<br />

valve indication solution to keep processes<br />

running smoothly. Clear feedback of valve<br />

position helps process industry plants,<br />

platforms and pipelines<br />

operate safely without<br />

taking up additional<br />

production line footprint.<br />

Its cam design enables<br />

swift position configuration<br />

for faster installation<br />

and maintenance. For<br />

many process industry<br />

applications, it provides a<br />

compact design suited for confined<br />

spaces. In addition, its enclosure has UV<br />

F1 rating, providing UV resistance that<br />

ensures it performs over the long-term in<br />

outdoor conditions. This switchbox is in the<br />

TopWorx valve intelligence and proximity<br />

sensing portfolio from Emerson, designed<br />

The TopWorx DVR switchbox is a durable<br />

valve positioner that provides open and close<br />

valve position feedback (Image: Emerson)<br />

to help process industry plants manage and<br />

control operations more intelligently under<br />

demanding conditions.<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 61


SEA 2023 highlights<br />

growing regional efforts<br />

for a green future<br />

1 2<br />

3<br />

1 The seminars organised<br />

by SEA exhibitors delved<br />

into advancements<br />

in sustainable and<br />

environmental practices,<br />

delivering an overview<br />

of news in this industry<br />

2 Industries represented<br />

were water and<br />

wastewater, and green<br />

technology<br />

3 This assembly brought<br />

stakeholders in the<br />

sustainability industry<br />

across South East <strong>Asia</strong><br />

The inaugural Sustainability Environment<br />

<strong>Asia</strong> (SEA) was held from 22-24 Nov 2023<br />

at Kuala Lumpur Convention Centre (KLCC),<br />

Malaysia. This event was co-located<br />

with E-Mobility <strong>Asia</strong> (EMA). This event<br />

marked the collective effort to address<br />

environmental challenges, promote<br />

sustainable practices, and advocate for a<br />

lifestyle centred around sustainability.<br />

The opening ceremony was graced by<br />

the presence of Tengku Zafrul, Minister<br />

of Investment, Trade, and Industry (MITI).<br />

The two events showcased 62 exhibiting<br />

companies and drew over 6,000 trade<br />

visitors and delegates from 34 countries.<br />

Participants included The Electrical<br />

and Electronics Association of Malaysia<br />

(TEEAM), ESG Association of Malaysia<br />

(ESGAM), Malaysia <strong>Water</strong> Association<br />

(MWA), Malaysian Recycling Alliance<br />

(MAREA), Singapore <strong>Water</strong> Association<br />

(SWA), and Taiwan Environmental<br />

Manufacturers Association (TEMA). SEA<br />

emerged as a platform for interactions<br />

between buyers and sellers, facilitating<br />

connections with stakeholders. Vivien<br />

Seong, SWA executive director, said the<br />

association will be back next year and<br />

looked forward to engaging with coastal<br />

management and flood management<br />

companies.<br />

Visitors could explore technologies and<br />

the trends in sustainability landscape. The<br />

event provided an opportunity to engage in<br />

the Singapore business forum and business<br />

matching, organised by SWA in collaboration<br />

with MWA. Visitors also participated in the<br />

‘Women in Sustainability’ forum, featuring<br />

experts from the Philippines and Malaysia,<br />

showcasing the role of women in driving<br />

sustainability initiatives. These sessions<br />

offered a perspective on contemporary<br />

affairs within the realm of sustainability. The<br />

second edition of SEA is scheduled to take<br />

place from 12-14 Nov <strong>2024</strong> at KLCC.<br />

Images: SEA 2023<br />

62 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>


Events calendar<br />

<strong>2024</strong><br />


24 – 27 <strong>January</strong><br />

WWETT, Indiana, US<br />

31 <strong>January</strong> – 2 <strong>February</strong><br />

InterAqua <strong>2024</strong>, Tokyo, Japan<br />

JULY<br />

3 – 5 July<br />

Thai <strong>Water</strong> Expo, Bangkok, Thailand<br />

30 July – 1 August<br />

Pump & Valves Indonesia, Jakarta, Indonesia<br />


20 – 21 <strong>February</strong><br />

World <strong>Water</strong>-Tech, London, UK<br />

APRIL<br />

16 – 18 April<br />

World Future Energy Summit,<br />

Abu Dhabi, UAE<br />

18 – 20 April<br />

IE expo China, Shanghai, China<br />

23 – 25 April<br />

<strong>Asia</strong><strong>Water</strong>, Kuala Lumpur, Malaysia<br />

30 April – 2 May<br />

Ozwater, Sydney, Australia<br />

MAY<br />

13 – 17 May<br />

IFAT, Munich, Germany<br />

18 – 24 May<br />

10th World <strong>Water</strong> Forum, Bali, Indonesia<br />

JUNE<br />

10 – 14 June<br />

ACHEMA, Frankfurt, Germany<br />

AUGUST<br />

11 – 15 August<br />

IWA World <strong>Water</strong> Congress & Exhibition,<br />

Toronto, Canada<br />

28 – 31 August<br />

<strong>Water</strong> Indonesia, Jakarta, Indonesia<br />


4 - 6 September<br />

IWRA Islands <strong>Water</strong> Congress<br />

Tórshavn, Faroe Islands<br />

18 – 20 September<br />

Indo <strong>Water</strong> Expo & Forum,<br />

Jakarta, Indonesia<br />


6 – 8 November<br />

Vietwater, Ho Chi Minh, Vietnam<br />


11 – 13 December<br />

Aquatech China, Shanghai, China<br />

18 – 22 June<br />

SIWW, Singapore<br />

<strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong> 63



ASIAWATER <strong>2024</strong><br />

PAGE<br />

IBC<br />



IFC<br />


INDOWATER <strong>2024</strong><br />

OBC<br />



64 <strong>Water</strong> & <strong>Wastewater</strong> <strong>Asia</strong> | <strong>January</strong>-<strong>February</strong> <strong>2024</strong>

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